How to Fix Missing Calendar in Microsoft Teams on Windows 10? | PhoneReporters

How to Fix Missing Calendar in Microsoft Teams on Windows 10?

This article explains how to fix missing Calendar in Microsoft Teams on Windows 10 devices.

The versatility of the Microsoft Teams application has meant that a greater number of individuals, businesses, schools, and other organizations are using the interface in their day-to-day activities. Users of the Teams application have access to one main calendar which may be personal (in the case of a personal account) or organization-based (in the case of a group, school, or organization). 

It is possible for an account holder to schedule meetings or events using the calendar which will show up for other members of the same group. The calendar is thus an important component that is needed for scheduling group activities on Microsoft Teams.

However, there have been reports of Missing Calendar in Microsoft Teams from some users who were unable to locate the calendar on their Microsoft Teams app. This can pose a serious problem to a wide array of users on the platform. Here, we will prefer solutions to the issues of Missing Calendar in Microsoft Teams. But before then, what are the possible causes of Missing Calendar in Microsoft Teams?

Possible Cause of Missing Calendar in Microsoft Teams 

A number of reasons could be adduced for the scenario of a missing calendar on MS Teams. Some of the most probable causes are;

  • Policy decisions by the group/ organization administrator
  • Exchange web services protocol, and
  • Access settings in on-premises mailboxes.

If there was an administrative policy change, it is possible that an administrator of a group or team may have altered the related policy that would have then disabled the calendar in group members’ accounts. 

For organization-based accounts, it is possible for the administrator to disable the exchange web services protocol, then individual members would be affected and they would be unable to view their calendars. This is because the privacy considerations of the administrator are extended to all other members, which is among several functionalities that have been incorporated into MS Teams to enhance privacy and control.

If access to your calendar is limited to only your on-premises mailboxes (e.g google or your organization’s emails), then the calendar feature will not work with Microsoft Teams. Access must be given to the exchange organization’s on-premises mailboxes for MS Teams’ calendar feature can work.


How Do I Fix Missing Calendar in Microsoft Teams on Windows 10?

For the stated causes of the problem of missing calendar in Microsoft Teams in Windows 10, there are a number of solutions.

If the disappearance was a result of administrative policy, then the team administrator can be notified so as to correct the problem by reviewing the changes done and reverting to the settings that do not lead to a disappearance of the calendar.

  • The first step for the administrator is to sign in to the official Microsoft Teams Admin Center as an Office 365 Administrator.

Missing Calendar in Microsoft Teams

  • Then click Users and select your account.
  • After the relevant account has been selected, the settings window will open, which will highlight all the settings related to the specified account.
  • The next thing is to click on the Policies tab on the account information page and select Global (Org-wide default) under the App setup policy section.

Missing Calendar in Microsoft Teams

  • This will open MS Teams policy that contains settings for the MS Teams applications including calendar, which can thus be adjusted.
  • Under Pinned apps, check whether the calendar is on the list or not.

Missing Calendar in Microsoft Teams

  • If it is absent, then click Add apps and select Calendar to add it back.
  • You can then go back to the Microsoft Teams app and launch it to make the Calendar accessible.

Fix Missing Calendar in Microsoft Teams  using Exchange web services protocol

For the problem of exchange web services protocols, the procedure explained above may not work. If the problem of missing Calendar was a result of the exchange web services protocol, then it needs the assistance of an IT expert who will be able to activate the protocol following the steps below: 

If the above solution did not work for you then there is a strong possibility that your organization has disabled Exchange Web Services Protocol, ultimately causing the problem. In that case, you need to contact your IT expert and ask him to enable Exchange Web Services Protocol by following the steps given below.  

Missing Calendar in Microsoft Teams

  • Begin the process by clicking Start and search Windows PowerShell. Then right-click and select Run as Administrator.
  • Copy and paste the command given below in Windows PowerShell and press Enter. 

Get-CASMailbox “Identity Name” | fl ews*

  • This returns an admixture of client access settings for one or more mailboxes. 
  • Check whether the command EwsEnabled returns a false or true response.
  • In case it’s false then this is an intended solution and you may proceed with the next step.
  • Otherwise, the Exchange Web Services are already allowed by your organization.
  • If the response is false, copy and paste the command given below in Windows PowerShell and press Enter. 

Set-CASMailbox “Identity Name” -EwsEnabled $True

If the procedure is followed correctly as specified above, then this will enable Exchange Web Services Protocol which will enable the calendar in the default menu of MS Teams. You can then launch Microsoft Teams and see whether the calendar feature will be visible.

The third solution of disappearing calendar on Microsoft Teams relates to enabling Exchange On-Premises Mailboxes. This procedure however has some basic requirements that should be met before following the steps to activate the calendar on Microsoft Teams. The user must be in sync with the Azure Active Directory for organizations, must have a working Exchange on-premises server mailbox, while the Exchange Server should not be earlier than 2016 and must have a hybrid connection. Finally, OAuth authentication must be configured.


For Cloud users, the calendar feature in MS Teams is synchronized with their Exchange Online (EXO) calendar. 

If all the requirements above are met, then you can now inform your administrator to allow MS Teams to be given access to your Exchange on-premises for both Autodiscover and EWS. The following information will help you throughout the process:


Autodiscover and EWS URLs should be directly accessible from your Web Browser. Pre-Auth is not supported and if you use some sort of publishing system, you will need to configure pass-through.

OAuth authentication must be configured and working between your Office 365 tenant and Exchange on-premises. It is very helpful to first run the Hybrid Configuration Wizard (HCW).

However, if all of these suggestions fail, it may also be possible to restore the calendar feature by using Restore Repair Tool to scan the repositories and replace corrupt and missing files, as well as optimize the system for optimal performance. 


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