Cannot import the following key file error when importing pfx

Question

I researched this question thoroughly on stackoverflow and I have seen numerous answers but none of them have worked for us yet. We recently bought a code signing certificate fr

Answer 1

I have learned that Visual Studio doesn't seem to handle subordinate certificates very well.
I tried several certs on multiple machines (different OS/VS combinations) with the same results.
I finally found this as a workaround:

• Sign the assembly with

  signtool sign /f "[path to pfx]" /p [password] /v "[path to assembly]"

• Build your installer with mageUI (see "Manually Deploying a ClickOnce Application")

The issue with Visual Studio seems to be that it does not like certificate chaining. This you can solve by importing/exporting the certificate without the chaining. The next issue is addressed by using the certutil and export with the AT_SIGNATURE. I was able to import it into VS and build, however it doesn't seem to sign the assembly.