If you use QChain.exe to install multiple hotfixes to your Windows 2000 Server at the same time, when you restart your computer you may receive:

Services.exe: Entry point not found.
The procedure entry point LsaOpenPolicySce could not be located in the dynamic link library advapi32.dll.

You have an incorrect version of Advapi32.dll in the %SystemRoot%\System32 folder.

To fix this problem, install the most recent Windows 2000 Service Pack.