SBS 2011 DC Failure
Windows SBS 2011 single-server domain. DC boots up but directory services does not start. Netlogon service fails with 0xc000064. ADUS, ADSS, tools will not start - stating invalid interface. Users cannot access network shares, printers, etc. Netdom query fsmo errors with invalid interface. DCDiag shows cannot connect to DC. Have already tried last known good configuration. Your thoughts would be very appreciated.
The system event log is your friend. After you reboot, the first few errors should tell you the real problem.
Boot into directory services repair mode and try running the Ntdsutil utility from a command prompt.
Go to the command prompt window, type
ntdsutil
and press Enter.
At the Ntdsutil prompt, type
files
The utility will display the File Maintenance category.
At the File Maintenance prompt, type
repair
Then enter
Go to the command prompt window, type
ntdsutil
and press Enter.
At the Ntdsutil prompt, type
files
The utility will display the File Maintenance category.
At the File Maintenance prompt, type
repair
Then enter
What @pgm554 has suggested is a dangerous thing to do if you don't have a good backup and if you don't know what the actual problem is, yet.
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Event log error related to netlogon..
Look at d2/d4 burflags (d4 authoritative)
Does c:\windows\system32\sysvol
Often the error that prevents the netlogon from being shared includes the instruction to the remedy.
Commonly deals with setting the registry to reinitialize the jurnl_wrap error preventing, replication, thus sharing of netlogon.