Urgently looking for help on a SBS 2003 R2 Premium Server which suddenly stops to respond to clients.
After 10 months of normal operation the server shows the following
The symptoms start independent of client access or network load, sometimes the problem starts with all clients shut down.
The Server which is the only server in the network(DC, DNS, DHCP, Exchange, SQL2005) running a sql 2005 database suddenly stops responding to client access. SQL Server is not reachable and client logon fails.
The chronology is the same all 1 or 2 days and arises at random times.
The eventlog first shows an MSExchangeDSAccess Event ID 2102 Error in the application log meaning DC Server not responding
after aprox. 18 seconds it shows an MSExchangeDSAccess Event ID 2103 (GC- Server not responding)
These event ID´s are followed by MSExchangeAC 8026 Error(Server is shut down) and MSExchangeSA Error 9154(Error Code 0x80004005)
Then there are multiple Exchange errors
aprox. 15 Minutes after the first Error in the Application Log the AD Log shows a NTDS General Event ID 1655 (AD connection to GC failed) following by a NTDS General Event ID 1126(AD Connection to GC failed Error: 1460 timeout)
1 hour later there is an event entry 1869(AD found GC at "ServerName") followed by Event ID 1655 and 1126 again.
aprox. 1 minute after the error occurs the DNS log shows an Event ID 4015 (critical Error in AD) followed by 4x Event ID 4004 and then many Event ID´s 4000(DNS server could not open AD)
The System log shows no Errors.
The only solution to get the server back to work ist to do a restart, but the server doesn´t shut down completely for hours(hanging at blank screen with blue background(no BSOD)
After a hard reset the server comes up normally and works without problems for one or two days, till the same symptoms appear again.
SBS 2003 R2 SP2 all updates applied
DCDiag and NetDiag don´t show any errors, Chkdsk is running without errors on all harddrives
Intel DQ35JOE with Core2Duo E6600
3x Seagate SATA HDD on onboard RAID
Desperately looking for further help
thomas hajek - austria