Error 1905: Failed to unregister

[jweath]

I created a .Net setup package using ISE 4.1. The installation works fine. It's the uninstallation that is giving me problems.

When I attemp to uninstall my program the following error message is displayed:
Error 1905: Module 'c:\My Program\my_Program.dll' failed to unregister. HRESULT - 2147220472

My program is an ArcGIS extensions. On My_Program.dll property menu under "COM & .NET Settings" I have choosen "Self-Registration", Installer Class = Yes, and Com Interop = Yes. I aslo have the <COMRegisterFunction> and <COMUnregisterFunction> in my code to perform the self-registration and self-unregistration.

Does any one know what's going on?

[JoeKowalski]

I had the same problem with my DLL created with MFC using OLE 2.0.

I had too add the DllUnregisterServer(..) function to my DLL in c++. I used some code from codeguru or the codeproject to do this.

Installshield tries to unregister your DLL when uninstalling. This is the same as typing "REGSVR32 your_program.DLL /u" in the DOS prompt. If this doesn't work installshield will give the error you described.

Does anybody know a way not to let installshield try to unregister your DLL ?

[harid38]

when you see that dialog, check if the file exists or not.

it could be possible that the file which you are unregistering was deleted before you unregister it.

[nmsams]

I'm having the same issue. The file does not exist at the time the install is trying to unregister it.

How do I avoid this error message?

Should I create a custom action that will unregister the file while it is there? And at what point would I run that custom action?

Or is there a way to just suppress the error message?

Thanks.