RM499892 - Microsoft Teams: Weaponizable File Type Protection for Teams Chat and Channels

Microsoft 365 Roadmap

Status

Launched

Release

General Availability
Targeted Release

Last Updated

Dec 12, 2025

Published Aug 13, 2025

Platforms

Android
Desktop
iOS
Web

Service

Microsoft Teams

Tag

Launched
General Availability
Targeted Release
Worldwide (Standard Multi-Tenant)

Cloud

Worldwide (Standard Multi-Tenant)

Summary

Microsoft Teams now blocks messages containing weaponizable file types, such as executables, in chats and channels, increasing protection against malware and other file-based attacks.

Description

Microsoft Teams now blocks messages containing weaponizable file types, such as executables, in chats and channels, increasing protection against malware and other file-based attacks.

GA date: September CY2025