Summary
Keep Microsoft Teams desktop clients (version 24295.x.x.x or older) updated to avoid warning banners starting March 2025 and blocking pages from May 6th, 2025. Ensure automatic updates or frequent updates to the golden image to stay current. Check the Teams Admin Center for client usage reports.
Here it is original article
https://admin.microsoft.com/AdminPortal/home?ref=MessageCenter/:/messages/MC1038442