Microsoft Teams Calendar missing or not showing
The problem is not limited to a single version. It can occur on the web app, Desktop client as well as the mobile client. However, in a few simple steps, you can get rid of this problem. See how! If there is more than one user for the same account, chances are someone might have changed the related policy. Launch Microsoft Teams. Go to Teams Admin Center.
Scroll down to Users. This section allows you to manage audio conferencing settings, the policies assigned to them, phone numbers, and other features for people in your organization that use Teams and Skype for Business.
Find and click your account that appears as a link.
Switch to the Policies tab. This allows the admin to assign a policy directly to users, either individually or at scale through a batch assignment. The under Assigned Policies section, locate the App setup policy. Check if your account is using the default Global policy. If not, change the APP set up a policy to the one that enables the Calendar APP, or edit the existing policy assigned to your account to add the Calendar app under Pinned apps.
Here, you can choose which apps you want to be installed for your users. They can still install other apps that they want by setting up those apps in permission policies. This should fix the problem. That’s all there is to it!