Application failed codesign verification. What do I do?

Question

Xcode gives me this warning when I build the app for release.

Application failed codesign verification. The signature was invalid, or it was not signe

Answer 1

I solved this by deleting the Archive that's not validating from the Organizer, closed and reopened Xcode and built for Archiving again.

I then chose Archive from the drop down menu. After doing that my app passed validation.

Hope that helps.