Unable to upload app to iTunes Connect - iTunes Store operation failed. Authentication timeout

Question

I\'m trying to upload my app to iTunes Connect with Xcode. I chose product > archive, choose my account, it compiles and when I try to upload it hand for a long time on:

Answer 1

I've had the same issue. Tried to upload the app with Transporter with no success. Restarting of Mac and Xcode didn't help.

Solution was to logout from Xcode and log in back Xcode -> Preferences -> Accounts -> Select your Apple ID and click on "-" below