Every now and then a computer will lose it’s security association with the domain controller.
This happens a lot when you use virtual machines and snapshots.
You can fix this in a number of ways.
The manual way is to reset the computer account in Active Directory Users and Computers.
Join a workgroup then rejoin the domain.
A better way is to use DSMOD
dsmod computer “cn=W8WS1,ou=test,ou=testdomain,ou=com” -reset
then restart the computer.
Another good way is to use nltest
nltest /server:W8WS01 /sc_reset:testdomain\dc01
This has the advantage of not needing to restart the computer.
And finally with PowerShell you can use:
This also does not require a restart.