Server 2008 Standard R2 - Server unable to communicate on network

[Cameron Shaw]

This is server is the host to our Netbackup 6.5.4 Server which is our main
backup server for this server enviroment.

I'm encountering an issue where I will come in the morning and randomly the
server will lose the ability to communicate on the network. What makes it
strange is:
-There is still a link light
-I've updated the nic drivers and this problem still continues
-The static ip information is still there
-The DNS information is correct
-I can log into the server without issue locally and according to Windows
Network and Sharing Center there is no issue with the connection.
-All services set to automatic have started up.
-If I restart the nic the problem fixes itself.

I'm going to try re-creating the computer, but I'm out of idea's. There is
one error that keeps re-peating itself in the event log
Log Name: System
Source: Group Policy
Event ID: 1054
Level: Error
User: System
Description: The processing of Group Policy failed. Windows could not obtain
the name of a domain controller. This could be caused by a name resolution
failure. Verify your Domain Name System (DNS) is configured and working
correctly.

The problem is I don't have control or even access to the domain controllers
and it's random.

Any suggestions would be appreciated.

[Dave Patrick]

You state "lose the ability to communicate on the network" but how are you
confirming this? Can you ping by name? by address? What are the symptoms?
--
Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
This is server is the host to our Netbackup 6.5.4 Server which is our main
backup server for this server enviroment.
I'm encountering an issue where I will come in the morning and randomly
the server will lose the ability to communicate on the network. What makes
-There is still a link light
-I've updated the nic drivers and this problem still continues
-The static ip information is still there
-The DNS information is correct
-I can log into the server without issue locally and according to Windows
Network and Sharing Center there is no issue with the connection.
-All services set to automatic have started up.
-If I restart the nic the problem fixes itself.
I'm going to try re-creating the computer, but I'm out of idea's. There is
one error that keeps re-peating itself in the event log
Log Name: System
Source: Group Policy
Event ID: 1054
Level: Error
User: System
Description: The processing of Group Policy failed. Windows could not
obtain the name of a domain controller. This could be caused by a name
resolution failure. Verify your Domain Name System (DNS) is configured and
working correctly.
The problem is I don't have control or even access to the domain
controllers and it's random.
Any suggestions would be appreciated.

[Cameron Shaw]

The symptons are: Will not respond to ping/rdp. From within the machine,
Static settings are still set, RDP is enabled, but you can't ping, rdp out,
etc.

According to Windows Network Centre the the connection is fine is and other
then the error I specified below there is nothing to indicate something is
wrong.

Thanks.

Post by Dave Patrick
You state "lose the ability to communicate on the network" but how are you
confirming this? Can you ping by name? by address? What are the symptoms?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
This is server is the host to our Netbackup 6.5.4 Server which is our
main backup server for this server enviroment.
I'm encountering an issue where I will come in the morning and randomly
the server will lose the ability to communicate on the network. What
-There is still a link light
-I've updated the nic drivers and this problem still continues
-The static ip information is still there
-The DNS information is correct
-I can log into the server without issue locally and according to Windows
Network and Sharing Center there is no issue with the connection.
-All services set to automatic have started up.
-If I restart the nic the problem fixes itself.
I'm going to try re-creating the computer, but I'm out of idea's. There
is one error that keeps re-peating itself in the event log
Log Name: System
Source: Group Policy
Event ID: 1054
Level: Error
User: System
Description: The processing of Group Policy failed. Windows could not
obtain the name of a domain controller. This could be caused by a name
resolution failure. Verify your Domain Name System (DNS) is configured
and working correctly.
The problem is I don't have control or even access to the domain
controllers and it's random.
Any suggestions would be appreciated.

[Dave Patrick]

"Will not respond to ping/rdp"

Have you also tried by address?
--
Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the machine,
Static settings are still set, RDP is enabled, but you can't ping, rdp
out, etc.
According to Windows Network Centre the the connection is fine is and
other then the error I specified below there is nothing to indicate
something is wrong.

[Cameron Shaw]

I didn't, just dns...Next time it happens. I'll try that. Have you heard of
something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the machine,
Static settings are still set, RDP is enabled, but you can't ping, rdp
out, etc.
According to Windows Network Centre the the connection is fine is and
other then the error I specified below there is nothing to indicate
something is wrong.

[Ace Fekay [MVP-DS, MCT]]

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you heard of
something like this before.

I've heard of something like this before when the DNS settings are not
correct, including if the DNS settings included an ISP's DNS or the router
as a DNS address, but you are trying to ping an internal machine by its
internal FQDN name. Another reason is the Primary DNS Suffix may not have
been set correctly for the internal domain, therefore leaving the Search
Suffix blank, resulting in when trying to ping by single name, it had
nothing to suffix the name with, therefore nothing to lookup in DNS.

For all practical purposes, to check internal communication, first run an
ipconfig /all. Make sure the Primary DNS Suffix is correct for the domain
(which will populate when you join the machine or manually setting it), the
subnet mask is correct, the DNS addresses are ONLY pointing to internal DNS
server(s), and the gateway is correct.

Then ping itself to make sure the networking services are running, then ping
the gateway. If both ping by IP, then try pinging a name. If name resolution
fails, then go back and look at your DNS and other settings I've mentioned.
If trying to connect by RDP and not responding by IP, then that could mean
you haven't allowed RDP into the system. It's off by default on a fresh
installation.

Also check your Windows Firewall settings. If not sure of the settings,
simply disable all firewalls on the machine for testing. If it works, hence
there's the issue.

Also check your Event logs for any possible errors.

If you could post an ipconfig /all (unedited, of course), of this machine
and a working internal machine, that can help provide a starting point
towards a more specific diagnosis. Also post event log errors, if
applicable.
--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services

If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.

[Dave Patrick]

Yes, if by address works then it is more than likely a DNS issue. If it
fails then I'd replace the network interface.
--
Regards,

Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you heard of
something like this before.

[Nime]

Here someone -an employee- did a shortcircuit on an 8 port switch, say port 2 and port 7 were "connected".
It was really difficult to fix (found) the problem. At server, one of two NIC card couldnt ping anywhere.

I didn't, just dns...Next time it happens. I'll try that. Have you heard of something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?

[Ace Fekay [MVP-DS, MCT]]

Post by Nime
Here someone -an employee- did a shortcircuit on an 8 port switch, say
port 2 and port 7 were "connected".
It was really difficult to fix (found) the problem. At server, one of two
NIC card couldnt ping anywhere.

If someone jumped two ports on the same switch, I wouldn't call it short
circuiting, rather it introduced a feedback to itself, for a lack of a
better word. All traffic being sent out on the one port was going back to
itself causing a problem with the switch's alorithm to handle the traffic,
essentially not knowing what to do with it. I've seen older switches do the
same with two NICs that are teamed, not able to handle it, causing a traffic
surge.

Ace

[NeilH]

Sounds like it is time to get rid of a certain person for interfering with
your network.
In the company I work for, this would lead to dismissal.

Post by Nime
Here someone -an employee- did a shortcircuit on an 8 port switch, say

port 2 and port 7 were "connected".

Post by Nime
It was really difficult to fix (found) the problem. At server, one of two

NIC card couldnt ping anywhere.

Post by Nime

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you heard

of something like this before.

Post by Nime

Post by Cameron Shaw

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?

[Cameron Shaw]

I have an update. The issue has just occured. Ping/RDP doesnt work via
either DNS or IP. To further complicate the issue I've mapped the computer
via the HOSTS file from the computer I am trying to connect from.

This would be mean this isn't an issue of being to resolve an address, but
an inability to communicate. As usual local physical login is fine and the
server other then this network issue is operating fine.

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you heard of
something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the machine,
Static settings are still set, RDP is enabled, but you can't ping, rdp
out, etc.
According to Windows Network Centre the the connection is fine is and
other then the error I specified below there is nothing to indicate
something is wrong.

[kj [SBS MVP]]

Adjust the Windows firewall settings. - for confirmaiton, just turn it off
briefly.

Post by Cameron Shaw
I have an update. The issue has just occured. Ping/RDP doesnt work via
either DNS or IP. To further complicate the issue I've mapped the
computer via the HOSTS file from the computer I am trying to connect
from.
This would be mean this isn't an issue of being to resolve an
address, but an inability to communicate. As usual local physical
login is fine and the server other then this network issue is
operating fine.

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you
heard of something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the
machine, Static settings are still set, RDP is enabled, but you
can't ping, rdp out, etc.
According to Windows Network Centre the the connection is fine is
and other then the error I specified below there is nothing to
indicate something is wrong.

[Cameron Shaw]

The firewall is already off

Post by kj [SBS MVP]
Adjust the Windows firewall settings. - for confirmaiton, just turn it off
briefly.

Post by Cameron Shaw
I have an update. The issue has just occured. Ping/RDP doesnt work via
either DNS or IP. To further complicate the issue I've mapped the
computer via the HOSTS file from the computer I am trying to connect
from.
This would be mean this isn't an issue of being to resolve an
address, but an inability to communicate. As usual local physical
login is fine and the server other then this network issue is
operating fine.

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you
heard of something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the
machine, Static settings are still set, RDP is enabled, but you
can't ping, rdp out, etc.
According to Windows Network Centre the the connection is fine is
and other then the error I specified below there is nothing to
indicate something is wrong.

--
/kj

[kj [SBS MVP]]

Post by Cameron Shaw
The firewall is already off

Confirmed with;

netsh advfirewall show allprofile

?

Post by Cameron Shaw

Post by kj [SBS MVP]
Adjust the Windows firewall settings. - for confirmaiton, just turn
it off briefly.

Post by Cameron Shaw
I have an update. The issue has just occured. Ping/RDP doesnt work
via either DNS or IP. To further complicate the issue I've mapped
the computer via the HOSTS file from the computer I am trying to
connect from.
This would be mean this isn't an issue of being to resolve an
address, but an inability to communicate. As usual local physical
login is fine and the server other then this network issue is
operating fine.

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you
heard of something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the
machine, Static settings are still set, RDP is enabled, but you
can't ping, rdp out, etc.
According to Windows Network Centre the the connection is fine is
and other then the error I specified below there is nothing to
indicate something is wrong.

--
/kj

[Cameron Shaw]

Domain Profile Settings:
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable

Logging:
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096


Private Profile Settings:
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable

Logging:
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096


Public Profile Settings:
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable

Logging:
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096

Ok.

Post by kj [SBS MVP]

Post by Cameron Shaw
The firewall is already off

Confirmed with;
netsh advfirewall show allprofile
?

Post by Cameron Shaw

Post by kj [SBS MVP]
Adjust the Windows firewall settings. - for confirmaiton, just turn
it off briefly.

Post by Cameron Shaw
I have an update. The issue has just occured. Ping/RDP doesnt work
via either DNS or IP. To further complicate the issue I've mapped
the computer via the HOSTS file from the computer I am trying to
connect from.
This would be mean this isn't an issue of being to resolve an
address, but an inability to communicate. As usual local physical
login is fine and the server other then this network issue is
operating fine.

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have you
heard of something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the
machine, Static settings are still set, RDP is enabled, but you
can't ping, rdp out, etc.
According to Windows Network Centre the the connection is fine is
and other then the error I specified below there is nothing to
indicate something is wrong.

--
/kj

--
/kj

[kj [SBS MVP]]

All three profiles indicate they are in the "ON" state, not "OFF" as you
expect.

Post by Cameron Shaw
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096
Ok.

Post by kj [SBS MVP]

Post by Cameron Shaw
The firewall is already off

Confirmed with;
netsh advfirewall show allprofile
?

Post by Cameron Shaw

Post by kj [SBS MVP]
Adjust the Windows firewall settings. - for confirmaiton, just turn
it off briefly.

Post by Cameron Shaw
I have an update. The issue has just occured. Ping/RDP doesnt work
via either DNS or IP. To further complicate the issue I've mapped
the computer via the HOSTS file from the computer I am trying to
connect from.
This would be mean this isn't an issue of being to resolve an
address, but an inability to communicate. As usual local physical
login is fine and the server other then this network issue is
operating fine.

Post by Cameron Shaw
I didn't, just dns...Next time it happens. I'll try that. Have
you heard of something like this before.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the
machine, Static settings are still set, RDP is enabled, but you
can't ping, rdp out, etc.
According to Windows Network Centre the the connection is fine
is and other then the error I specified below there is nothing
to indicate something is wrong.

--
/kj

--
/kj

[Ace Fekay [MVP-DS, MCT]]

Post by Cameron Shaw
The firewall is already off

Can we see an unedited ipconfig /all from this machine?

Also, is ISA in use? If so, is the ISA Firewall Client installed?

Any third party security software (AV, antispamy, Zone Alarm, etc),
installed?
--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services

If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.

[Cameron Shaw]

Nope. Default install of 2008 + Symantec NetBackup Server

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw
The firewall is already off

Can we see an unedited ipconfig /all from this machine?
Also, is ISA in use? If so, is the ISA Firewall Client installed?
Any third party security software (AV, antispamy, Zone Alarm, etc),
installed?
--
Ace
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Please reply back to the newsgroup or forum for collaboration benefit
among responding engineers, and to help others benefit from your
resolution.
Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
If you feel this is an urgent issue and require immediate assistance,
please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.

[Ace Fekay [MVP-DS, MCT]]

Post by Cameron Shaw

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw
The firewall is already off

Can we see an unedited ipconfig /all from this machine?
Also, is ISA in use? If so, is the ISA Firewall Client installed?
Any third party security software (AV, antispamy, Zone Alarm, etc),
installed?

Nope. Default install of 2008 + Symantec NetBackup Server

I guess "nope" was the response to evreything but the ipconfig /all. Can we
see that?

Also, as KJ pointed out, apparently the Windows firewall is on, not off. Can
you disable all 3 profiles, and try again? At least remove that from the
equation.

Ace

[Cameron Shaw]

There are a couple of things that don't seem right here.
1 )Why would the Windows Firewall GUI report that everything is turned off,
but netsh advfirewall show allprofile
would say they are on?
2)If this was a firewall thing it would be a constant. The firewall doesn't
just turn off unless someone turns it off and in which case upon a restart
it wouldn't reset. I'm the only one that goes on this server so an issue
with the firewall would seem very unlikely

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw
The firewall is already off

Can we see an unedited ipconfig /all from this machine?
Also, is ISA in use? If so, is the ISA Firewall Client installed?
Any third party security software (AV, antispamy, Zone Alarm, etc),
installed?

Nope. Default install of 2008 + Symantec NetBackup Server

I guess "nope" was the response to evreything but the ipconfig /all. Can
we see that?
Also, as KJ pointed out, apparently the Windows firewall is on, not off.
Can you disable all 3 profiles, and try again? At least remove that from
the equation.
Ace

[Cameron Shaw]

If the server was doing random things I could possibly see that item having
issues, but all this server does it run a single app and no one but me even
connects to it. So the randomness of it would swing me away from a setting
issue, since if was a block it would always block and if it was set to block
a restart wouldn't fix it.

Post by Cameron Shaw
There are a couple of things that don't seem right here.
1 )Why would the Windows Firewall GUI report that everything is turned
off, but netsh advfirewall show allprofile
would say they are on?
2)If this was a firewall thing it would be a constant. The firewall
doesn't just turn off unless someone turns it off and in which case upon a
restart it wouldn't reset. I'm the only one that goes on this server so an
issue with the firewall would seem very unlikely

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw
The firewall is already off

Can we see an unedited ipconfig /all from this machine?
Also, is ISA in use? If so, is the ISA Firewall Client installed?
Any third party security software (AV, antispamy, Zone Alarm, etc),
installed?

Nope. Default install of 2008 + Symantec NetBackup Server

I guess "nope" was the response to evreything but the ipconfig /all. Can
we see that?
Also, as KJ pointed out, apparently the Windows firewall is on, not off.
Can you disable all 3 profiles, and try again? At least remove that from
the equation.
Ace

[Ace Fekay [MVP-DS, MCT]]

Post by Cameron Shaw

Post by Cameron Shaw
There are a couple of things that don't seem right here.
1 )Why would the Windows Firewall GUI report that everything is turned
off, but netsh advfirewall show allprofile
would say they are on?
2)If this was a firewall thing it would be a constant. The firewall
doesn't just turn off unless someone turns it off and in which case upon
a restart it wouldn't reset. I'm the only one that goes on this server so
an issue with the firewall would seem very unlikely

If the server was doing random things I could possibly see that item
having issues, but all this server does it run a single app and no one but
me even connects to it. So the randomness of it would swing me away from a
setting issue, since if was a block it would always block and if it was
set to block a restart wouldn't fix it.

I understand that. I was just trying to eliminate variables. I can
understand being reluctant to post an ipconfig /all, as well.

The only other thing I can think of is, and I can't remember if this was
discussed, and the thread is pretty long to go through each post, to disable
RSS, TOE (if an option on the NIC), and IPv6.

I assume you've updated the NIC drivers, too.

Thinking back, I remember a similar issue with a sWindow 2008 Ent server in
the past. A reinstall did the trick.

Otherwise, if none of the old suggestions, or my latest suggestions work,
IMHO, I honestly suggest at this point to contact Microsoft PSS.

Ace

[Cameron Shaw]

I've updated the nic drivers + firmware. Replaced the motherboard yesterday
as well.

Post by Ace Fekay [MVP-DS, MCT]

Post by Cameron Shaw

Post by Cameron Shaw
There are a couple of things that don't seem right here.
1 )Why would the Windows Firewall GUI report that everything is turned
off, but netsh advfirewall show allprofile
would say they are on?
2)If this was a firewall thing it would be a constant. The firewall
doesn't just turn off unless someone turns it off and in which case upon
a restart it wouldn't reset. I'm the only one that goes on this server
so an issue with the firewall would seem very unlikely

If the server was doing random things I could possibly see that item
having issues, but all this server does it run a single app and no one
but me even connects to it. So the randomness of it would swing me away
from a setting issue, since if was a block it would always block and if
it was set to block a restart wouldn't fix it.

I understand that. I was just trying to eliminate variables. I can
understand being reluctant to post an ipconfig /all, as well.
The only other thing I can think of is, and I can't remember if this was
discussed, and the thread is pretty long to go through each post, to
disable RSS, TOE (if an option on the NIC), and IPv6.
I assume you've updated the NIC drivers, too.
Thinking back, I remember a similar issue with a sWindow 2008 Ent server
in the past. A reinstall did the trick.
Otherwise, if none of the old suggestions, or my latest suggestions work,
IMHO, I honestly suggest at this point to contact Microsoft PSS.
Ace

[Ace Fekay [MVP-DS, MCT]]

Post by Cameron Shaw
I've updated the nic drivers + firmware. Replaced the motherboard
yesterday as well.

So does that mean it now works?

[M W]

We're having the same issue with a couple 2008 machines.

Post by Cameron Shaw
This is server is the host to our Netbackup 6.5.4 Server which is our main
backup server for this server enviroment.
I am encountering an issue where I will come in the morning and randomly the
server will lose the ability to communicate on the network. What makes it
-There is still a link light
-I have updated the nic drivers and this problem still continues
-The static ip information is still there
-The DNS information is correct
-I can log into the server without issue locally and according to Windows
Network and Sharing Center there is no issue with the connection.
-All services set to automatic have started up.
-If I restart the nic the problem fixes itself.
I am going to try re-creating the computer, but I am out of idea's. There is
one error that keeps re-peating itself in the event log
Log Name: System
Source: Group Policy
Event ID: 1054
Level: Error
User: System
Description: The processing of Group Policy failed. Windows could not obtain
the name of a domain controller. This could be caused by a name resolution
failure. Verify your Domain Name System (DNS) is configured and working
correctly.
The problem is I do not have control or even access to the domain controllers
and it is random.
Any suggestions would be appreciated.

Post by Dave Patrick
You state "lose the ability to communicate on the network" but how are you
confirming this? Can you ping by name? by address? What are the symptoms?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by Cameron Shaw
The symptons are: Will not respond to ping/rdp. From within the machine,
Static settings are still set, RDP is enabled, but you cannot ping, rdp out,
etc.
According to Windows Network Centre the the connection is fine is and other
then the error I specified below there is nothing to indicate something is
wrong.
Thanks.

Post by Dave Patrick
"Will not respond to ping/rdp"
Have you also tried by address?
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

I did not, just dns...Next time it happens. I will try that. Have you heard of
something like this before.

I have heard of something like this before when the DNS settings are not
correct, including if the DNS settings included an ISP's DNS or the router
as a DNS address, but you are trying to ping an internal machine by its
internal FQDN name. Another reason is the Primary DNS Suffix may not have
been set correctly for the internal domain, therefore leaving the Search
Suffix blank, resulting in when trying to ping by single name, it had
nothing to suffix the name with, therefore nothing to lookup in DNS.
For all practical purposes, to check internal communication, first run an
ipconfig /all. Make sure the Primary DNS Suffix is correct for the domain
(which will populate when you join the machine or manually setting it), the
subnet mask is correct, the DNS addresses are ONLY pointing to internal DNS
server(s), and the gateway is correct.
Then ping itself to make sure the networking services are running, then ping
the gateway. If both ping by IP, then try pinging a name. If name resolution
fails, then go back and look at your DNS and other settings I have mentioned.
If trying to connect by RDP and not responding by IP, then that could mean
you have not allowed RDP into the system. it is off by default on a fresh
installation.
Also check your Windows Firewall settings. If not sure of the settings,
simply disable all firewalls on the machine for testing. If it works, hence
there is the issue.
Also check your Event logs for any possible errors.
If you could post an ipconfig /all (unedited, of course), of this machine
and a working internal machine, that can help provide a starting point
towards a more specific diagnosis. Also post event log errors, if
applicable.
--
Ace
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.
Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.

Post by Dave Patrick
Yes, if by address works then it is more than likely a DNS issue. If it
fails then I'd replace the network interface.
--
Regards,
Dave Patrick ....Please no email replies - reply in newsgroup.
Microsoft Certified Professional
Microsoft MVP [Windows]
http://www.microsoft.com/protect

Post by David Shen [MSFT]
Hello customer,
The managed support service of the microsoft.public.windows.server.general
http://social.technet.microsoft.com/Forums/en-US/winservergen/threads.
Would you please repost the question in the forum with the Windows Live ID
used to access your Subscription benefits? Our engineers will assist you in
the new platform.
The web link http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx
introduces more information about the migration. In the future, please post
your Print-related questions directly to the forums. If you have any
David Shen
Microsoft Online Technical Support

Post by Nime
Here someone -an employee- did a shortcircuit on an 8 port switch, say port 2 and port 7 were "connected".
It was really difficult to fix (found) the problem. At server, one of two NIC card couldnt ping anywhere.

If someone jumped two ports on the same switch, I would not call it short
circuiting, rather it introduced a feedback to itself, for a lack of a
better word. All traffic being sent out on the one port was going back to
itself causing a problem with the switch's alorithm to handle the traffic,
essentially not knowing what to do with it. I have seen older switches do the
same with two NICs that are teamed, not able to handle it, causing a traffic
surge.
Ace

Post by NeilH
Sounds like it is time to get rid of a certain person for interfering with
your network.
In the company I work for, this would lead to dismissal.
port 2 and port 7 were "connected".
NIC card couldnt ping anywhere.
of something like this before.

Post by Cameron Shaw
I have an update. The issue has just occured. Ping/RDP doesnt work via
either DNS or IP. To further complicate the issue I have mapped the computer
via the HOSTS file from the computer I am trying to connect from.
This would be mean this is not an issue of being to resolve an address, but
an inability to communicate. As usual local physical login is fine and the
server other then this network issue is operating fine.

Post by kj [SBS MVP]
Adjust the Windows firewall settings. - for confirmaiton, just turn it off
briefly.
--
/kj

Post by Cameron Shaw
The firewall is already off

Post by kj [SBS MVP]
Confirmed with;
netsh advfirewall show allprofile
?
--
/kj

Post by Ace Fekay [MVP-DS, MCT]
Can we see an unedited ipconfig /all from this machine?
Also, is ISA in use? If so, is the ISA Firewall Client installed?
Any third party security software (AV, antispamy, Zone Alarm, etc),
installed?
--
Ace
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.
Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services
If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.

Post by Cameron Shaw
Nope. Default install of 2008 + Symantec NetBackup Server

Post by Cameron Shaw
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096
----------------------------------------------------------------------
State ON
Firewall Policy BlockInbound,AllowOutbound
LocalFirewallRules N/A (GPO-store only)
LocalConSecRules N/A (GPO-store only)
InboundUserNotification Disable
RemoteManagement Disable
UnicastResponseToMulticast Enable
LogAllowedConnections Disable
LogDroppedConnections Disable
FileName
%systemroot%\system32\LogFiles\Firewall\pfirewall.log
MaxFileSize 4096
Ok.

Post by kj [SBS MVP]
All three profiles indicate they are in the "ON" state, not "OFF" as you
expect.

Post by Ace Fekay [MVP-DS, MCT]
I guess "nope" was the response to evreything but the ipconfig /all. Can we
see that?
Also, as KJ pointed out, apparently the Windows firewall is on, not off. Can
you disable all 3 profiles, and try again? At least remove that from the
equation.
Ace

There are a couple of things that do not seem right here.
1 )Why would the Windows Firewall GUI report that everything is turned off,
but netsh advfirewall show allprofile
would say they are on?
2)If this was a firewall thing it would be a constant. The firewall does not
just turn off unless someone turns it off and in which case upon a restart
it would not reset. I am the only one that goes on this server so an issue
with the firewall would seem very unlikely

Post by Cameron Shaw
If the server was doing random things I could possibly see that item having
issues, but all this server does it run a single app and no one but me even
connects to it. So the randomness of it would swing me away from a setting
issue, since if was a block it would always block and if it was set to block
a restart would not fix it.

Post by Ace Fekay [MVP-DS, MCT]
I understand that. I was just trying to eliminate variables. I can
understand being reluctant to post an ipconfig /all, as well.
The only other thing I can think of is, and I cannot remember if this was
discussed, and the thread is pretty long to go through each post, to disable
RSS, TOE (if an option on the NIC), and IPv6.
I assume you have updated the NIC drivers, too.
Thinking back, I remember a similar issue with a sWindow 2008 Ent server in
the past. A reinstall did the trick.
Otherwise, if none of the old suggestions, or my latest suggestions work,
IMHO, I honestly suggest at this point to contact Microsoft PSS.
Ace

I have updated the nic drivers + firmware. Replaced the motherboard yesterday
as well.

Post by Ace Fekay [MVP-DS, MCT]
So does that mean it now works?
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[David Shen [MSFT]]

Hello customer,

The managed support service of the microsoft.public.windows.server.general
is now available instead on General forum:
http://social.technet.microsoft.com/Forums/en-US/winservergen/threads.
Would you please repost the question in the forum with the Windows Live ID
used to access your Subscription benefits? Our engineers will assist you in
the new platform.

The web link http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx
introduces more information about the migration. In the future, please post
your Print-related questions directly to the forums. If you have any
questions or concerns, please feel free to contact us: ***@microsoft.com

David Shen
Microsoft Online Technical Support