I have a HP Server with Windows Server 2008 installed and have been running for about 5 years without errors.
Last half year I have encountered error in the event viewer every day and after 7 days of running the server can no longer access simple things like "Active Directory Users And Computers" there will be an error when I open it. (something like cannot determine global catalogue server) Neither browsing the internet will work or connecting to the local nas or router / 192.168.0.1 A simple restart give me about another 7 days before the error appears.
I frequently receive errors (4500 errors a week) with event id 1206 ADWS (Active Directory Web Services was unable to determine if the computer is a global catalog server.)
No huge differences have been made to the server, no anti virus are currently installed. Windows firewall is off. No other servers or AD in the network.
(dcdiag /v) gives this error
Running enterprise tests on : "server name"
Test omitted by user request: DNS
Test omitted by user request: DNS
Starting test: LocatorCheck
GC Name: \\"server name"
Locator Flags: 0xe00031bd
PDC Name: \\Server name"
Locator Flags: 0xe00031bd
Warning: DcGetDcName(TIME_SERVER) call failed, error 1355
A Time Server could not be located.
The server holding the PDC role is down.
Warning: DcGetDcName(GOOD_TIME_SERVER_PREFERRED) call failed, error
1355
A Good Time Server could not be located.
KDC Name: \\"Server name"
Locator Flags: 0xe00031bd
......................... "Server name" failed test
LocatorCheck
Starting test: Intersite
Skipping site Default-First-Site-Name, this site is outside the scope
provided by the command line arguments provided.
......................... "Server name" passed test Intersite
Thanks for any help and sorry for my non native English.