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(Updated) New file protection in Teams chat and channels blocks unsafe content [MC1148540]

Message ID: MC1148540 (Updated) Updated November 17, 2025: The rollout of Weaponizable file type protection in Microsoft Teams is expected to finish before the end of November 2025 for General Availability (Worldwide). The previously announced update to make Weaponizable file…

Modern Workspace Pro 17 November 2025Admin impact, New feature, Prevent or fix issues, Updated message, User impactNo Comments

Microsoft Teams

(Updated) New file protection in Teams chat and channels blocks unsafe content [MC1148540]

Message ID: MC1148540 (Updated) Updated October 30, 2025: We have updated the content. Thank you for your patience.IntroductionMicrosoft Teams is introducing a new protection feature that blocks messages containing weaponizable file types—such as executables—in chats and channels. This helps reduce…

Modern Workspace Pro 30 October 2025Admin impact, New feature, Prevent or fix issues, Updated message, User impactNo Comments

Microsoft Teams

New file protection in Teams chat and channels blocks unsafe content [MC1148540]

Message ID: MC1148540 (Updated) Updated September 9, 2025: We have updated the content. Thank you for your patience.IntroductionMicrosoft Teams is introducing a new protection feature that blocks messages containing weaponizable file types—such as executables—in chats and channels. This helps reduce…

Modern Workspace Pro 9 September 2025Admin impact, New feature, Prevent or fix issues, Updated message, User impactNo Comments

Microsoft Teams

New file protection in Teams chat and channels blocks unsafe content [MC1148540]

Message ID: MC1148540 IntroductionMicrosoft Teams is introducing a new protection feature that blocks messages containing weaponizable file types—such as executables—in chats and channels. This helps reduce the risk of malware and file-based attacks by preventing unsafe content from being shared.…

Modern Workspace Pro 6 September 2025Admin impact, New feature, Prevent or fix issues, User impactNo Comments

Microsoft Teams

Teams admin center: Messaging safety defaults changing to “On” by default [MC1200576]

Message ID: MC1200576 [Introduction] We’re improving messaging security in Microsoft Teams by enabling key safety protections by default. This update helps safeguard users from malicious content and provides options to report incorrect detections, reducing risk and improving collaboration security. [When…

Modern Workspace Pro 20 December 2025Admin impact, Feature update, Plan for changeNo Comments

Mike on Anthropic Claude Sonnet is now available in Microsoft 365 Copilot [MC1247880]17 April 2026
Really interesting update. It feels like the bigger story here is not just that another model has been added, but…
Mike on Copilot entry point changes in Excel [MC1282571]17 April 2026
This is a helpful breakdown of what looks like a small UX change on the surface but has very real…
AI Logo Generator on GCP Release Notes: February 14, 202617 February 2026
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This migration tool seems like a great step for those looking to modernize their infrastructure. Being able to move App…