Problems
This error may occur come when Exchange Online can’t to access the specified email address to desired location.
Solution
- Check if the mailbox exists by logging in to the Exchange Online Mailbox.
- Ensure that there are no typo errors in the email address.
- Give sufficient time to updates if the mailbox is newly created.
To resolve account issues, launch Support and Recovery Assistant.
If a single user in your company is experiencing trouble getting emails, the issue may be related to licencing, profiles, using the incorrect version of Outlook, or a variety of other problems. Fortunately, the Microsoft Support and Recovery Assistant discovers and assists you in resolving the majority of problems that affect Microsoft 365 or Outlook. We advise that you download and launch Support and Recovery Assistant on the impacted machine as the first step in resolving email delivery issues for Microsoft 365 for business.
You should be aware that you can utilise the app to verify your account settings if you're having problems with Outlook for Mac or mobile access. However, a PC is required to install the software. The app will scan for faults after you log in to the impacted account. Support and Recovery Assistant may normally be downloaded and run by users without assistance from their Microsoft 365 admin.
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