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

Microsoft 365 Roadmap ID: 499892
Launched
Microsoft Teams
Worldwide (Standard Multi-Tenant)
General Availability Targeted Release
Android Desktop iOS Web
September 2025

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.

Change History

Published: August 13, 2025
Last Updated: December 12, 2025
December 13, 2025 at 12:00 AM Updated
Status
Previous
Rolling out
New
Launched
Modified Date
Previous
2025-09-09T23:15:14.000Z
New
2025-12-12T23:00:26.000Z
September 10, 2025 at 12:00 AM Updated
Status
Previous
In development
New
Rolling out
Modified Date
Previous
2025-08-14T23:15:02.000Z
New
2025-09-09T23:15:14.000Z
August 15, 2025 at 12:00 AM Updated
Release Date
Previous
November CY2025
New
September CY2025
Release Phase
Previous
General Availability
New
General Availability, Targeted Release
Modified Date
Previous
2025-08-13T23:15:04.000Z
New
2025-08-14T23:15:02.000Z

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