It could also happen if the calendar app isn’t added in the Teams admin settings or if the organizational app policy doesn’t include it. Now that you understand the possible causes of the problem, you can move on to the solutions provided below.
1. Fix MS Teams App Setup Policy
Adjusting the App Setup Policy in Teams can restore the Calendar by ensuring it is included in the app setup policies, making it available to everyone in the organization.
2. Check Exchange Web Services Protocol
To address a missing calendar in Teams, check the Exchange Web Services (EWS) Protocol. This protocol must be enabled for Teams to access your Outlook calendar. If EWS is off, Teams can’t retrieve calendar data. Enabling this protocol restores calendar functionality.
3. Allow Exchange On-Premises Mailboxes (For Cloud Users)
If your organization uses on-premises Exchange mailboxes and Microsoft Teams in the cloud, enabling hybrid functionality is important. This setup syncs the mailboxes with Microsoft 365, allowing Teams to show calendar data from local servers. Without it, Teams can’t access on-premises mailbox data, leading to missing calendar issues. Before proceeding with the solution steps, there are some requirements that must be met to ensure the success of this solution.
Users must be synchronized with the organization’s Azure Active Directory.The user must have a working Exchange on-premises server mailbox.Exchange Server must have a hybrid connection.Exchange Server must be running Exchange Server 2016 or above.OAuth authentication must be configured.
For cloud users, the calendar in MS Teams is linked to their Exchange Online (EXO) calendar. When you schedule a meeting in Outlook, it appears in MS Teams and vice versa. After meeting the requirements, ask your IT expert to grant MS Teams access to your Exchange on-premises organization for Autodiscover and EWS. The following information will assist your organization in the process:
