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Metadata at Jul 30, 2026

Message ID

MC1440980

View in Message Center

Last Updated

Jul 30, 2026

Published Jul 27, 2026

Service

Microsoft Teams

Tag

Major change
Updated message
User impact
Admin impact
Retirement

Act by

Oct 1, 2026

View the latest version See what changed since this version

MC1440980 - Microsoft Teams: Update the Teams mobile app to maintain Calendar functionality

Message Center

What changed since this version

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Updated July 30,31, 2026: We have updated the timeline and content. Thank you for your patience. 

What and why

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.

Refer to this link for guidance on updating the policy - Exchange Online EWS

Rollout schedule

  • Worldwide, GCC, GCC High, and DoD: Beginning early October 2026 (previously late October) and expected to complete early October 2026 (previously late October)

Impact on your organization

Who is affected

  • All users who access Microsoft Teams from iOS or Android mobile devices

Platforms and services

  • Microsoft Teams
  • Teams mobile app for iOS
  • Teams mobile app for Android

What will happen

  • 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.
  • 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.
  • This change applies only to the Teams mobile app.
  • No changes are being made to Teams Calendar functionality on web or desktop clients.

Action required and recommendations

Action required.

Complete the following before October 2026:

  • Confirm that users are running the latest Microsoft Teams mobile app version available in the Apple App Store or Google Play Store.
  • Inform users that Calendar functionality in Teams mobile requires the latest app version and may not be available on older app versions.
  • Encourage users to enable automatic app updates on their mobile devices.
  • For managed devices, verify that mobile application management solutions are configured to deploy the latest Teams mobile app version.
  • Communicate this change to mobile users and support teams.

Ensure these minimum versions are in place before October 2026:

  • For iOS - Please update to version 8.9.0 (build 8.9.77.2026092302) or higher.
  • For Android - Please update to version 1416/1.0.0.2026122504 or higher

Learn more

Compliance considerations

No compliance considerations identified. Review as appropriate for your organization.

Snapshot from Jul 30, 2026

Updated July 30, 2026: We have updated the timeline and content. Thank you for your patience. 

What and why

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.

Refer to this link for guidance on updating the policy - Exchange Online EWS

Rollout schedule

  • Worldwide, GCC, GCC High, and DoD: Beginning early October 2026 (previously late October) and expected to complete early October 2026 (previously late October)

Impact on your organization

Who is affected

  • All users who access Microsoft Teams from iOS or Android mobile devices

Platforms and services

  • Microsoft Teams
  • Teams mobile app for iOS
  • Teams mobile app for Android

What will happen

  • 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.
  • 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.
  • This change applies only to the Teams mobile app.
  • No changes are being made to Teams Calendar functionality on web or desktop clients.

Action required and recommendations

Action required.

Complete the following before October 2026:

  • Confirm that users are running the latest Microsoft Teams mobile app version available in the Apple App Store or Google Play Store.
  • Inform users that Calendar functionality in Teams mobile requires the latest app version and may not be available on older app versions.
  • Encourage users to enable automatic app updates on their mobile devices.
  • For managed devices, verify that mobile application management solutions are configured to deploy the latest Teams mobile app version.
  • Communicate this change to mobile users and support teams.

Learn more

Compliance considerations

No compliance considerations identified. Review as appropriate for your organization.