Encountering issue: UserMailboxEndpointFetchFailed

Question

Hello, I have a basic Microsoft 365 license and should have access to outlook. However it seems even with the license I have the following issue:

Error Code = UserMailboxEndpointFetchFailed

Error Message = Could not fetch user exchange mailbox endpoint using AutoDV2.

Troubleshooting link = https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/exchange-integration/teams-exchange-interaction-issue

I noticed that I am unable to access outlook in "calendar", clicking on the icon gives an error.

I looked at the trouble shooting link: https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/exchange-integration/teams-exchange-interaction-issue

and calendar seems to be there in global configuration. Does anyone have any guidance why I cannot access outlook/calendar despite having a license? I am also an admin for my tenant, if there are step by step tips on enabling outlook please let me know. thanks

Answer 1

Hi VC,

Welcome to our forum!

According to my research, Teams Calendar App requires access to the Exchange mailbox through Exchange Web Services (EWS). The Exchange mailbox can be online or on-premises in the scope of Exchange hybrid deployment. Users can add apps on their own if the app permission policy lets them use it and an admin allows the app. If an app is blocked, then the users can request admin approval.

To add apps for your users using an app setup policy, follow these steps:

1. Sign in to Teams admin center and access Teams apps > Setup policies.
2. Select Add.
3. Provide a name and description for the policy.
4. Under Installed apps, select Add apps.
5. In the Add installed apps pane, search the apps that you want to add for users. You can also filter apps by app permission policy.
6. Select Add.

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