Uninstall CMDEBUG is not running

I've tried to uninstall the v21.01.46 x64, but I get the error:

upload_2017-9-27_13-31-13.png



and then

upload_2017-9-27_13-31-43.png

What will this mean ?
 
I've tryed it, but the effect is the same.
Also tryed it as Administrator, but no change.
Running under:
Windows 7 Ultimate, version 6.1 (Build 7601: Service Pack 1)
Very mysterious ....
 
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