It appears Microsoft is going to start validating Teams meeting join URLs.
Impact on Your Organization
- Who is affected:
- Organizations using security products that inspect or rewrite URLs, and users who join Microsoft Teams meetings via meeting links.
- What will happen:
- Microsoft Teams will validate join URLs to ensure they have not been modified.
- If a join URL is rewritten or altered by a security product, it may be marked as malicious.
- Users may be prevented from joining meetings if URLs are not in their original format.
- This feature is enabled by default and does not require admin configuration.
We currently have URL rewrite protection active in Sophos. What should I do to ensure the URLs work and are safe.
Edited TAGs
[edited by: Raphael Alganes at 2:30 PM (GMT -7) on 24 Jul 2025]