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RM571298Microsoft Teams: Customize blocked file extensions for Weaponizable File Protection

Summary

Microsoft Teams is expanding admin controls for Weaponizable File Protection. Administrators will be able to customize which file types are blocked in Teams to align with their organization's security requirements or continue using the Microsoft-recommended default list. This added flexibility helps organizations tailor file protection policies while maintaining a secure collaboration environment.

Description

Microsoft Teams is expanding admin controls for Weaponizable File Protection. Administrators will be able to customize which file types are blocked in Teams to align with their organization's security requirements or continue using the Microsoft-recommended default list. This added flexibility helps organizations tailor file protection policies while maintaining a secure collaboration environment.

GA date: December CY2026

Version history

3 versions tracked

Updated 2 times since Sep 16, 2026. Microsoft 365 Message Center only shows the current version; this archive preserves tracked history.

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  1. Nov 3, 2026 - 12:14 AMLatest - v3

    Changed: Body

  2. Sep 17, 2026 - 11:00 PMv2

    Changed: No tracked field changed

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  3. Sep 16, 2026 - 10:57 PMOriginal - v1

    Changed: Initial version

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