Group Policy, AD error, DNS

we are using Ucs 4.0.Unable to login to their PC during the initially part at times, as it says “Trust relationship between the workstation and primary domain failed” and this doesn’t happen at all times but its sporadic. As per policy, the PC gets locked in 5 minutes of ideally unlock the system as it says “Incorrect password” even while entering the correct credentials, this issue is sporadic as well. We need to restart the machine all over again to get this issue resolved.

Some errors like
· Trust relationship error

· Logon failure user account restriction(we are not apply any restriction)

. New user creations not shows in AD. When its once Restart.