(Updated) Microsoft Teams: Update the Teams mobile app to maintain Calendar functionality

2026-07-31T16:34:35.577Z

<p>Updated July 31, 2026: We have updated the timeline and content. Thank you for your patience.&nbsp;</p><p><b>[What and why]</b></p><p>To ensure continued access to Calendar functionality in Microsoft Teams mobile, users must update the Teams mobile app to the latest version. This change helps maintain a reliable calendar experience on iOS and Android devices and ensures compatibility with ongoing Teams service updates. Teams admins can make some policy changes (see below) and extend EWS until April 2027. EWS will no longer work after that date.<br><br>Refer to this link for guidance on updating the policy - <a href="https://techcommunity.microsoft.com/blog/exchange/exchange-online-ews-your-time-is-almost-up/4492361" target="_blank">Exchange Online EWS</a></p><p><b>[Rollout schedule]</b></p><ul><li><b>Worldwide, GCC, GCC High, and DoD:</b> Beginning <b>early October 2026</b> (previously&nbsp;late October)&nbsp;and expected to complete <b>early October 2026</b> (previously&nbsp;late October)</li></ul><p><b>[Impact on your organization]</b></p><p><i>Who is affected</i></p><ul><li>All users who access Microsoft Teams from iOS or Android mobile devices</li></ul><p><i>Platforms and services</i></p><ul><li>Microsoft Teams</li><li>Teams mobile app for iOS</li><li>Teams mobile app for Android</li></ul><p><i>What will happen</i></p><ul><li>Users who are not running the latest version of the Microsoft Teams mobile app will not be able to access Calendar functionality in Teams mobile.</li><li>Users must update to the latest Teams mobile app version available in the Apple App Store or Google Play Store to continue using Calendar functionality in Teams mobile.</li><li>This change applies only to the Teams mobile app.</li><li>No changes are being made to Teams Calendar functionality on web or desktop clients.</li></ul><p><b>[Action required and recommendations]</b></p><p>Action required.</p><p>Complete the following before October 2026:</p><ul><li>Confirm that users are running the latest Microsoft Teams mobile app version available in the Apple App Store or Google Play Store.</li><li>Inform users that Calendar functionality in Teams mobile requires the latest app version and may not be available on older app versions.</li><li>Encourage users to enable automatic app updates on their mobile devices.</li><li>For managed devices, verify that mobile application management solutions are configured to deploy the latest Teams mobile app version.</li><li>Communicate this change to mobile users and support teams.</li></ul><p>Ensure these minimum versions are in place before October 2026:</p><ul><li>For iOS - Please update to version 8.9.0 (build 8.9.77.2026092302) or higher.</li><li>For Android - Please update to version 1416/1.0.0.2026122504 or higher</li></ul><p><b>Learn more</b></p><ul><li><a href="https://learn.microsoft.com/exchange/clients-and-mobile-in-exchange-online/deprecation-of-ews-exchange-online" target="_blank">Deprecation of Exchange Web Services in Exchange Online | Clients and mobile in Exchange Online | Exchange Online | Microsoft Learn</a></li><li><a href="https://techcommunity.microsoft.com/blog/exchange/exchange-online-ews-your-time-is-almost-up/4492361" target="_blank">Exchange Online EWS</a></li></ul><p><b>[Compliance considerations]</b></p><p>No compliance considerations identified. Review as appropriate for your organization.</p>

To maintain Calendar functionality in Microsoft Teams mobile on iOS and Android, users must update to the latest Teams app by early October 2026. Older versions will lose calendar access. Admins should ensure updates, inform users, and configure management tools accordingly. This change does not affect desktop or web clients.

2026-07-30T16:40:27.800Z

<p>Updated July 30, 2026: We have updated the timeline and content. Thank you for your patience.&nbsp;</p><p><b>[What and why]</b></p><p>To ensure continued access to Calendar functionality in Microsoft Teams mobile, users must update the Teams mobile app to the latest version. This change helps maintain a reliable calendar experience on iOS and Android devices and ensures compatibility with ongoing Teams service updates. Teams admins can make some policy changes (see below) and extend EWS until April 2027. EWS will no longer work after that date.<br><br>Refer to this link for guidance on updating the policy - <a href="https://techcommunity.microsoft.com/blog/exchange/exchange-online-ews-your-time-is-almost-up/4492361" target="_blank">Exchange Online EWS</a></p><p><b>[Rollout schedule]</b></p><ul><li><b>Worldwide, GCC, GCC High, and DoD:</b> Beginning <b>early October 2026</b> (previously&nbsp;late October)&nbsp;and expected to complete <b>early October 2026</b> (previously&nbsp;late October)</li></ul><p><b>[Impact on your organization]</b></p><p><i>Who is affected</i></p><ul><li>All users who access Microsoft Teams from iOS or Android mobile devices</li></ul><p><i>Platforms and services</i></p><ul><li>Microsoft Teams</li><li>Teams mobile app for iOS</li><li>Teams mobile app for Android</li></ul><p><i>What will happen</i></p><ul><li>Users who are not running the latest version of the Microsoft Teams mobile app will not be able to access Calendar functionality in Teams mobile.</li><li>Users must update to the latest Teams mobile app version available in the Apple App Store or Google Play Store to continue using Calendar functionality in Teams mobile.</li><li>This change applies only to the Teams mobile app.</li><li>No changes are being made to Teams Calendar functionality on web or desktop clients.</li></ul><p><b>[Action required and recommendations]</b></p><p>Action required.</p><p>Complete the following before October 2026:</p><ul><li>Confirm that users are running the latest Microsoft Teams mobile app version available in the Apple App Store or Google Play Store.</li><li>Inform users that Calendar functionality in Teams mobile requires the latest app version and may not be available on older app versions.</li><li>Encourage users to enable automatic app updates on their mobile devices.</li><li>For managed devices, verify that mobile application management solutions are configured to deploy the latest Teams mobile app version.</li><li>Communicate this change to mobile users and support teams.</li></ul><p><b>Learn more</b></p><ul><li><a href="https://learn.microsoft.com/exchange/clients-and-mobile-in-exchange-online/deprecation-of-ews-exchange-online" target="_blank">Deprecation of Exchange Web Services in Exchange Online | Clients and mobile in Exchange Online | Exchange Online | Microsoft Learn</a></li><li><a href="https://techcommunity.microsoft.com/blog/exchange/exchange-online-ews-your-time-is-almost-up/4492361" target="_blank">Exchange Online EWS</a></li></ul><p><b>[Compliance considerations]</b></p><p>No compliance considerations identified. Review as appropriate for your organization.</p>

(Updated) Microsoft Teams: Update the Teams mobile app to maintain Calendar functionality

To maintain Calendar functionality in Microsoft Teams mobile, users must update to the latest app version by early October 2026. This affects all iOS and Android users; older versions will lose calendar access. No changes affect web or desktop clients. Organizations should ensure updates and inform users accordingly.

2026-07-30T16:26:14.943Z

Updated message,User impact,Admin impact,Retirement

<p>Updated July 30, 2026: We have updated the timeline. Thank you for your patience.&nbsp;</p><p><b>[What and why]</b></p><p>To ensure continued access to Calendar functionality in Microsoft Teams mobile, users must update the Teams mobile app to the latest version. This change helps maintain a reliable calendar experience on iOS and Android devices and ensures compatibility with ongoing Teams service updates.</p><p><b>[Rollout schedule]</b></p><ul><li><b>Worldwide, GCC, GCC High, and DoD:</b> Beginning <b>early October 2026</b> (previously&nbsp;late October)&nbsp;and expected to complete <b>early October 2026</b> (previously&nbsp;late October)</li></ul><p><b>[Impact on your organization]</b></p><p><i>Who is affected</i></p><ul><li>All users who access Microsoft Teams from iOS or Android mobile devices</li></ul><p><i>Platforms and services</i></p><ul><li>Microsoft Teams</li><li>Teams mobile app for iOS</li><li>Teams mobile app for Android</li></ul><p><i>What will happen</i></p><ul><li>Users who are not running the latest version of the Microsoft Teams mobile app will not be able to access Calendar functionality in Teams mobile.</li><li>Users must update to the latest Teams mobile app version available in the Apple App Store or Google Play Store to continue using Calendar functionality in Teams mobile.</li><li>This change applies only to the Teams mobile app.</li><li>No changes are being made to Teams Calendar functionality on web or desktop clients.</li></ul><p><b>[Action required and recommendations]</b></p><p>Action required.</p><p>Complete the following before late October 2026:</p><ul><li>Confirm that users are running the latest Microsoft Teams mobile app version available in the Apple App Store or Google Play Store.</li><li>Inform users that Calendar functionality in Teams mobile requires the latest app version and may not be available on older app versions.</li><li>Encourage users to enable automatic app updates on their mobile devices.</li><li>For managed devices, verify that mobile application management solutions are configured to deploy the latest Teams mobile app version.</li><li>Communicate this change to mobile users and support teams.</li></ul><p><b>Learn more</b></p><ul><li><a href="https://learn.microsoft.com/exchange/clients-and-mobile-in-exchange-online/deprecation-of-ews-exchange-online" target="_blank">Deprecation of Exchange Web Services in Exchange Online | Clients and mobile in Exchange Online | Exchange Online | Microsoft Learn</a></li></ul><p><b>[Compliance considerations]</b></p><p>No compliance considerations identified. Review as appropriate for your organization.</p>