Troubleshooting - Determing service pack

Winmsd.exe (Start|Programs|Administrative tools|Microsoft Diagnostics) can be used either remotely (through a RAS connection) or by talking the customer through launching Microsoft Diagnostics over the phone. The default startup screen for MSD shows the NT version and service pack level.

Important Note: Applying Sp3 onto a server which is already running a later service pack (SP4) will cause the system to become unusable (or at very least unstable) until SP4 is reapplied and/or a repair is done using a pre-SP4 repair disk to replace the SAM's database. Please never apply any older service packs (NT4SP3) onto customer sites that already have newer servicepacks NT4SP4 or later.

Determining what service pack a system is running

Applies to

Solution