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
Another 'worked for me' ...
Right-clicked on the PFX in Windows Explorer, chose 'Install PFX' and in the wizard supplied the password. Then in the project properties in VS, under 'Signing' chose 'Change Password' and re-entered the password. Prior to this only running VS as administrator would work.