In Xcode, when I try to Product > Archive > Validate App I get the error:
No accounts with iTunes Connect access have been found fo
For me, this happened when I have the same Apple Id added to the accounts of Xcode on two devices. After removing the account from one device, the other one can upload to App Store fine. I did restart Xcode after removing, not sure if that's necessary. Maybe it's more like a session expires or connection issue.