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My development machine was rebooted after a windows update recently and now I can't access my admin account.
I never reboot my machine except when forced by WU so I actually don't know if the problem is related to WU. Don't remember when I last used the admin account but it is probably a week or 2 ago.
Normally I run in a normal user account and keep an admin command prompt open to deal with admin tasks.
What happens now is:
If I do something that triggers the UAC and enter user ".\admin" and password I get the message
Logon failure: unknown user or bad password
If I do
RUNAS /user:.\admin cmd
I get the message
RUNAS ERROR: Unable to acquire user password
Any idea what the problem is?
It is not a big problem since I can call in a domain admin but I am curious about what has happened and why UAC and RUNAS show different error messages.
2There were no error messages or event logs about corrupt SAM file but problem was solved by resetting the admin password. Strange it can happen like this. What would I do if I didn't have the domain administrator? – adrianm – 2013-09-25T09:11:46.580