Netbois name keeps changing to FQDN on Work stations

Hello EE. We have a windows 2003 R2 server running AD, DNS, DHCP, and WINS. Intermittently I have users complaining about logging in to their domain pcs. They get "No Trust Relationship.......". When I check their settings the domain name has changed from the netbios name to the FQDN. When I change it back to the netbios name everything works fine. I am experiencing this throughout the domain. Even when I change it back it goes back to the FQDN setting some time later. What could be causing this?
InSearchOfAsked:
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SysExpertCommented:
Is there only one DC ?


DCDIAG /V /D /E /C > c:\DCDIAG-srvname.log
NETDIAG /V > c:\NETDIAG-srvname.log

look for FAIL or errors in the above logs

I hope this helps !



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InSearchOfAuthor Commented:
No, as a matter of fact we have 4 DCs. 2 at the main location and 2 at 2 different location. It is one domain spread across different subnets. The remote locations are connected via site to site VPN tunnels.
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InSearchOfAuthor Commented:
Did not resolve my issue. No comments added since my response.
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