Hello,
There appears to be a bug affecting MSTSC in Windows 11 version 24H2. Although numerous users have encountered this problem, it has not yet been officially documented among the known issues for version 24H2 till now.
A temporary workaround involves replacing the mstsc.exe and mstscax.dll files from an earlier version, such as 23H2.
Users have been providing feedback to the engineering teams, so I am confident that they are aware of the issue and are working towards a resolution.
I hope this information helps.
Best regards,
Karlie Weng