Windows Office Hours: January 16, 2025

Without knowing exactly which policies got set and what was blocked, my suggestion would be to look at your policies that would block any of the protocols used and ensure the firewall settings are not blocking or dropping communication between devices.  The Miracast spec here details the protocols used: https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-mice/9598ca72-d937-466c-95f6-70401bb10bdb . The driver requirements are also here, if you've had any driver updates, may be related to that as well. https://learn.microsoft.com/en-us/windows-hardware/design/device-experiences/wireless-projection-pc-manufacturers Hope that helps.