RM571298 - Microsoft Teams: Customize blocked file extensions for Weaponizable File Protection

Microsoft 365 Roadmap

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.

Published

Sep 16, 2026

Status

In development

Release

General Availability
Targeted Release

Platforms

Desktop

Service

Microsoft Teams

Tag

In development
General Availability
Targeted Release
Worldwide (Standard Multi-Tenant)

Cloud

Worldwide (Standard Multi-Tenant)

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: November CY2026