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FIX: Microsoft Teams mailbox does not exist
3 min. read
Updated onOctober 4, 2023
updated onOctober 4, 2023
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Key notes
Microsoft TeamsMicrosoft Teams is a popular hub for teamwork in Office 365. Microsoft Teams’ mailbox allows the users to receive and send emails directly from the MT interface.
However, some users have reported that they are unable to view their mailbox in the Calendar tab as it showsMicrosoft Teamserror: Mailbox does not exist.
There are multiple instances of thiserroroccurring to other users as seen in theMicrosoft Tech community.
I configured Office 365 Hybrid ( sync users, configure exchange hybrid, configure federated domains( contoso.com, fabrikam.com) , all settings is ok. But when i log in my teams(with my —-“[email protected]” credentials) on calendar tab i have anerrormailbox does not exist
Follow the troubleshooting tips in this article to resolve the “Microsoft TeamserrorMailbox does not exist” issue.
How to fix Microsoft Teams error mailbox does not exist
1. Verify OAuth Configuration
The first thing you should do is to check the OAuth settings. You can test it using the Test-OAuthConnectivity cmdlet. You can learn more about usingTest-OAuthConnectivityCmdlet in the official forum.
However, for a quick guide, you can use the following PowerShell command to verify the authentication.
Microsoft Teams might make its way to Linux in the future
2. Manually Return the Job and Contact Support
If the issue persists, you can try to manually return the job as a workaround.
Although this is not an ideal solution or not even a solution, if the issue is at the Microsoft Team’s end, you may need to do it manually.
Several users have reported that the Microsoft Teams error Mailbox does not existerrorresolved itself automatically after a few days.
Make sure you contact the support in the meantime to let the Microsoft Teams developers know about the issue.
3. Reinstall Microsoft Teams
If the issue persists, you may want to uninstall and reinstall Microsoft Team.
Shared mailboxes can send emails without any problem. However, there is no information about the individual user sending the message as the commonemail addressis listed in the sender field.
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More about the topics:Microsoft Teams,Microsoft Teams Error Codes,productivity software
Tashreef Shareef
Tashreef Shareef is a software developer turned tech writer. He discovered his interest in technology after reading a tech magazine accidentally. Now he writes about everything tech from Windows to iOS and streaming services to IoT at WindowsReport.
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