However, some users have reported that they are unable to view their mailbox in the Calendar tab as it shows Microsoft Teams error: Mailbox does not exist. There are multiple instances of this error occurring to other users as seen in the Microsoft Tech community. Follow the troubleshooting tips in this article to resolve the “Microsoft Teams error Mailbox 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 using Test-OAuthConnectivity Cmdlet 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 exist error resolved 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.
Can a shared mailbox send emails?
Shared mailboxes can send emails without any problem. However, there is no information about the individual user sending the message as the common email address is listed in the sender field.
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