winapi - Can I remove a digital signature from a DLL?

Question

My installer build "signs" a DLL using a Code Signing certificate during the build process.

I've noticed that if I try to build twice in succession, the second build fails because the DLL is already signed so signcode chokes. Obviously I can fix this by signing a copy of the DLL in the build, but the problem intrigued me:

Is it possible to "unsign" a DLL, and if not, why not...?

Answer 1

You can use delcert.exe from the this XDA Forum post.

here is a small tool that strips (removes) digital sign (Authenticode) from PE executable files like *.exe, *.dll, *.mui, etc.