NLTeo's post on page 1 of this thread solved the issue for me.

There is another open thread on this topic. NLTeo's answer in that thread solved the issue for me. The solution was to switch from app specific login to Apple Connect API Keys for authentication. I've copied NLTeo's post below for convenience, since I can't cross link Create API key and download it https://appstoreconnect.apple.com/access/api Copy key-id and issuer from same page Store to keychain xcrun notarytool store-credentials Notarize --key apple-connect-api-key.p8 --key-id 1234567 --issuer 11f28c89-0bbc-47b8-bb65-ad719eb08e4c Use to notarize xcrun notarytool submit ParetoUpdater.zip --team-id 12345678 --progress --wait --keychain-profile "Notarize"