iTunes software service authentication error domain error 434

Question

I am uploading iPhone application using latest xCode 8. I have good internet connection and all the relevant settings set up at iTunes connect. My distribution profiles are also

Answer 1

None of the answers worked for me. Following steps helped me fix it.

1. Quit the Xcode
2. Delete all provisioning profiles (/Library/MobileDevice)
3. Start the code and try to validate without download the provisioning profiles.

The xcode will download the profiles for you.