If the Apple Developer account has a dual authentication login, you need to configure the dedicated password to the Appuploader to upload the ipa.

If you do not configure a dedicated password to upload ipa, you will report the following error.


1 package(s) were not uploaded because they had problems:C:\Users\ADMINI~1\AppData\Local\Temp\au\itmsp\1346411136.itmsp – Error Messages:
Sign in with the app-specific password you generated. If you forgot the app-specific password or need to create a new one, go to appleid.apple.com


Here’s the solution.

Open login




Find the security project and click Edit.



Click Generate Password to generate a special password. You can click to view the record before you create it. You can undo it or you can create a new one.



Password tags can be entered casually, 123, app, etc.

Click Create to create, the private password is the password like this, copy this password, open Appuploader


Click on the upper right corner, select Settings, copy the special password, and check the save account and save password. Click ok to save (the special password will be saved automatically, it will not be displayed.), and then submit the ipa upload to upload normally. .