JSI Tip 8895. When you run ADPREP /DOMAINPREP on a Windows Server, you receive 'Adprep was unable to update domain-wide information' and/or 'Windows cannot determine the local sysvol location'?

When you run adprep.exe /domainprep on Windows 2000 Server, or Windows Server 2003, you receive:

Adprep was unable to update domain-wide information. Adprep requires access to existing domain-wide information from the infrastructure master in order to complete this operation.

The %SystemRoot%System32DebugAdprepLogsGpupgrad.log and %SystemRoot%System32DebugAdprepLogsAdprep.log files report:

Windows cannot determine the local sysvol location. Upgrade of Domain Group Policy Objects failed. (The system cannot find the file specified.)

This behavior is indicative of a missing, corrupt, or incorrect registry entry.

To resolve this behavior:

1. If your Windows Server is running Windows 2000 server, install the Windows 2000 Support Tools.

2. Open a CMD.EXE window.

3. Type the following command and press Enter.

reg add HKLMSYSTEMCurrentControlSetServicesNetlogonParameters /V SysVol /T REG_SZ /D "%SystemRoot%sysvolsysvol" /F