Teams updates to watch: malicious link warnings, blocked risky files, and a new private backroom chat

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Microsoft has announced three Teams updates the past months. Two that strengthen security and one that will improve how organizers coordinate events: Malicious URL Protection, Weaponizable file type protection and Private chat for organizers, co‑organizers, and presenters. Please note that timelines can shift, so treat the dates as guidance rather than guarantees. Malicious URL Protection (Roadmap ID 499893 ) Microsoft has announced link‑scanning in Teams chats and channels that warns senders and recipients about unsafe URLs. The feature reached general availability rollout by the end of November 2025, while the separate change to make it ON by default, originally planned as part of that release, has been postponed to early 2026.  If you don't want to wait for it to be on by default, or feel the need to configure it, you can do so in the Teams admins center: "Teams admin center → Messaging settings → Scan messages for unsafe URLs”. Or you can mange the configuration with Power...

Cross posting in multiple channels

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Here is another feature that has been in the works for a while, and I know a lot of customers who have been waiting for this: Cross porting of messages in multiple channels in multiple teams.

It easy to use, and accessed through the "rich text" button on the bottom left when you create a new message. Then select your channels in the "select channels" button.

Be aware though, once these are posted, there is for now no way to see which channels you have posted the message in, and there is no aggregated view of all the comments in the different channels, they have to be monitored individually for now.

This is the M365 roadmap ID 52393 and should reach all tenants by the end of this month.