Weird network login issues

[Allanon10]

This issue started about 3 weeks ago, I have random local workstations on a domain who for some reason will not allow anyone to login unless PC is rebooted. We keep getting invalid username/password error, only way to get them to login is to reboot the PC. So far this appears to be random. I tried as myself and same error, I even unplugged the network cable and cached credentials would not work either. Anyone ever seen this ???

 

[GokAy]

Service issue perhaps? Is remote administration possible at this state?
Netlogon perhaps?

 

[Allanon10]

I will try to login with a local account next time it happens and no I cant remote into the affected machines, you thinking maybe RPC service is stopped ?

 

[GokAy]

Checked Event logs yet? Maybe a clue there, don't forget security logs too.

 

[UsernameIssues]

Does the Security Event log give any clues?
edit: GokAy types and thinks faster


> I cant remote into the affected machines
Does that include not being able to connect to the affected machines via your local Computer Management console?

 

[Allanon10]

didn't see anything in Event Viewer no

 

[Allanon10]

I will try using the console next time, did not try that yet

 

[UsernameIssues]

I will try using the console next time, did not try that yet

If you can connect via that console...
...check the state of log on related services
...stop/start those services
...check the System event log for service related issues