Last Updated: October 30, 2025
ISSUE
Outlook for Mac and Outlook Mobile intermittently stop syncing with the following error:
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Outlook Mobile: Add account again. We’re having trouble syncing emailaddress. Please add your account again.
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Outlook for Mac: Emailaddress: We’re having trouble syncing the mailbox. Please remove and add your account again.
STATUS: INVESTIGATING
The Outlook Team is investigating this issue for a fix. We will update this topic as soon as we have more information.
WORKAROUND
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Open the Outlook web app.
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Go to the People pane.
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Select Favorites under the user’s mailbox.
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Delete all Favorites contacts.
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