COM.Mydll.tlb file not able to load assembly which it refers

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My "com.Mydll.tlb" file is having reference to "otherdll.dll" when I am importing com.Mydl.tlb in app(VC++) and build, com.Mydll.tlh header file generated successfully.

but when I am trying to create instance

"HRESULT error REGDB_E_CLASSNOTREG Class not registered is coming."

when I registered otherdll.dll to GAC this error was gone, but I was not able to access otherdll.dll methods.

I have tried to keep both dll's in same working directory, tried to load otherdll.dll dynamically. still problem persists.

Tried to register otherdll.dll using regasm, but it was also not helpful. It will be really helpful if anyone can suggest something..

Posted 27-Oct-14 2:17am

Sunita Rana

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Maciej Los · Answer 1 · 2014-10-27T09:06:00

Solution 1

See past answers: "Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))"[^]

As per my experience, you need to register both dlls in GAC or - at least - otherdll.dll via regsrv32.exe.

Posted 27-Oct-14 9:06am

Maciej Los