The following is a rare but frustrating error that can occur in Windows 2000 when you attempt to install a program using the InstallShield or MSI package system:

Unhandled Exception

Error: 0x80070725
Description: Incompatible version of the RPC stub.

Setup will now terminate.

Most of the people who report this problem have some form of Microsoft Office installed -- usually Office 2000 or better. Office 2000 installs different versions of the files Oleaut32.dll, Olepro32.dll, Asycfilt.dll and Stdole2.tlb -- several critical system components which must be kept consistent with each other be work correctly. If a badly-written install program updates one of these components without also keeping the others consistent, the components may not be able to communicate with each other and this error results. (There may also be other components that interrelate with these that can throw this error, but the ones listed above are the main culprits.)

There are a few ways to resolve this problem. If Office 2000 is installed, install the Service Release 1 or later of Office 2000; if Office is not present, download the MCREPAIR tool from Microsoft. MCREPAIR re-registers the components in question and insures that they are of the same revision. Both techniques insure that all of the above components are updated to the 2.40.4515 revision (except for Olepro32.dll, which is 5.0.4515).

The MCREPAIR tool can be downloaded from:

Serdar Yegulalp is the editor of the Windows 2000 Power Users Newsletter.

This was first published in February 2003

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