Today some sites upgraded their Yealink Panels from Firmware 22.214.171.124 to 126.96.36.199 and immediately logged out with this message. “Your current license is not supported on this device.”
It seems that Microsoft announced this change in a convoluted way. (In other words hiding the fact that it now needs a paid license and that Teams Rooms Basic doesn’t cut it anymore).
To fix this problem, you now need to add the new Microsoft Teams Shared Devices licence. No problem if you buy direct, but if you use a CSP, they have not added it yet. But its apparently coming!