Logging in to your Apple ID during the setup process on the device fails with the following error:
"Could not sign in. A server problem is blocking Apple ID sign in. Try again later."
This can happen after restoring a backup of a device to another, or after transferring data using iMazing's 'Transfer to another Device' wizard.
The iOS Setup Assistant does not actually require you to sign. You can bypass the sign in screen following these steps:
- Delete your Apple ID password from the password field
- Tap 'Back'
- You can now skip the sign in step ('Don't sign in' or 'Skip this step' button in the lower part of the screen).
You can then sign in via the Settings App on your device, where the error should not occur again.
On devices running iOS 11, it may be needed to remove the device from your account:
- If you have another iOS device logged in the same Apple ID, head to its Settings app and tap the first option, labelled Apple ID, iCloud, iTunes & App Store. On the next screen, you will see all your signed in devices listed. Tap the one which is giving you the sign in error, and choose Remove from Account.
- Otherwise, login to iCloud.com and navigate to Settings. You can remove the troublesome device from your account there by clicking the device, and then the little blue cross:
Once your device is fully removed from your account, you should be able to sign in without errors, or to skip the sign in step altogether.
To avoid this error message in the future, you can check Erase target device(s) when restoring backups with iMazing.
For more information, see our guide on how to restore an iPhone, iPad or iPod touch from an iTunes backup.