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Messages on my Mac is suddenly inactive and I c...

Suddenly today I can't send or receive messages in the Message app on my MBP running Sierra. It says the account is not active and gives me a dialog to sign in.

But when I enter my Apple ID and password after a while it says unable to authenticate. I'm able to send and receive messages on my iPhone and iPad.

And I can sign in to icloud.com on my Mac, the app store, and also these forums with the same Apple ID and password.

Any idea what might be wrong with Messages?

最后更新：2017-09-08 22:15:27

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