I\'m trying to sign a Windows 8 appx package with a pfx file I have. I\'m using a command like so:
signtool.exe sign /fd sha256 /f \"key.pfx\" \"app.appx\" <
My problem ended up being that I did not understand the signtool options. I had provided the /n option with something that did not match my certificate. When I removed that it stopped complaining.