DllUnregisterServer failed with error code 0x80040200 when tried to unregister cdo32.dll

Original title: DllUnregisterServer failed with error code 0x80040200

Does anyone know how to research/correct this problem? I encountered this error:

DllUnregisterServer failed with error code 0x80040200

when I executed the following command at the command prompt:

regsvr32 /u cdo32.dll

The path was c:\Windows\System32

Frank Z. Kertai

This thread is locked. You can vote as helpful, but you cannot reply or subscribe to this thread.

Answer

Hi Frank,

Did you try running the command prompt in elevated mode (administrator mode) to try unregistering the DLL file?

If not, then try running the command prompt in administrator mode and check if you’re able to unregister the file successfully.

Run Command prompt in elevated mode

a. Click on Start; in the start search type cmd.

b. Right click on cmd.exe and choose to run as administrator.

c. regsvr32 /u cdo32.dll

d. Check if it gets unregistered successfully or not.

Hope this information is helpful and let me know if you need any further assistance.

Mouneshwar R – Microsoft Support

34 people found this reply helpful

Was this reply helpful?

Sorry this didn't help.

Great! Thanks for your feedback.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this reply?

Thanks for your feedback.

Replies (2)

Last updated March 28, 2024 Views 21,626 Applies to: