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Editorial Team
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Asked: 2026-05-13T22:42:29+00:00

We are getting the error below calling c:\windows\syswow64\regsvr32.exe on Windows Server 2008 R2 x64.

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We are getting the error below calling c:\windows\syswow64\regsvr32.exe on Windows Server 2008 R2 x64. This used to work fine on Win2003 x64, with our 32-bit COM DLLs, so we could use them from 32-bit processes.

It’s happening on all ATL COM DLLs of ours, and doesn’t seem related to DLL load dependencies. (Tried using depends.exe, and nothing was apparent.)

>
The module “.\foo_com.dll” was loaded but the call to DllRegisterServer failed with error code 0x80070005.
<<<

These DLLs were built with VS2008, ATL (UNICODE).

Any ideas?

Thanks,
Kirk

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1 Answer

  1. Editorial Team

    If UAC is on, are you launching this from a cmd shell with admin privileges active ?

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