Hi @Anonymous ,
by default the mstsc.exe
should be in the C:\Windows\System32\
folder.
Are you able to start mstsc.exe
at all on the computer?
If the mstsc.exe is missing on the computer you could try to copy the file from a working computer.
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten