Exchange sync with Apple Mail fails after upgrade to MacOS27

After upgrading to MacOS27 Apple Mail integration with Exchange fails. When moving messages the queue gets stuck and the only way to fix it seems to rebuild the DB. Is it a known issue? Is there a way to fix it permanently?

Thanks, Marco

Posted on Sep 22, 2026 1:27 AM

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Exchange sync with Apple Mail fails after upgrade to MacOS27

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