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Server cannot see workstations

Posted on 2008-10-27
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Last Modified: 2012-06-27
My SBS 2003 cannot see the workstations and vice-versa.  Botrh sets of machines can get to the d/g which is 192.168.0.1 and can see network printers. Just not each other. Cannot browse or ping.  
When I try to start the windows firewall I get a message that the ipnathlp file is in use. ROuting and Remote access is disabled. I get the following error in event viewer...

Event Type:      Error
Event Source:      ipnathlp
Event Category:      None
Event ID:      32009
Date:            10/27/2008
Time:            1:17:14 PM
User:            N/A
Computer:      SERVER
Description:
The Windows Firewall/Internet Connection Sharing (ICS) service could not start because another program or service is running that might use the network address translation component (Ipnat.sys). This can occur when Routing and Remote Access is enabled. If this is the case, you must disable Routing and Remote Access before the Windows Firewall/Internet Connection Sharing (ICS) service can start.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
 
I also get the following error on restart.  All other services seem to start except windows firewall.
Event Type:      Error
Event Source:      ipnathlp
Event Category:      None
Event ID:      32009
Date:            10/27/2008
Time:            12:40:56 PM
User:            N/A
Computer:      SERVER
Description:
The Windows Firewall/Internet Connection Sharing (ICS) service could not start because another program or service is running that might use the network address translation component (Ipnat.sys). This can occur when Routing and Remote Access is enabled. If this is the case, you must disable Routing and Remote Access before the Windows Firewall/Internet Connection Sharing (ICS) service can start.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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Question by:degoodwin
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by:degoodwin
ID: 22817313
Ok, I disabled the windows firewall from starting and it cleared the above error but i still cant ping to or from my server and workstations and I cannot access network shares on server.  All machines can ping default gateway and printers and all can print to them and get internet access.  Something is wrong on the server.
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degoodwin earned 0 total points
ID: 22817439
I fixed it. The reverse lookup zone for the AD in the DNS server was deleted. I added it as a new zone, rebooted and it started working again.
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