Hi,
in your install_cert.bat file at line #10 the name of the cert file has space and not underscore:
set certName=RDP Protocol Handler.cer
set certPath=%~dp0%certName%
The cert file when downloaded has underscore so for the .bat to work the name of the cert must have underscore
At line #7 with the exit /b command the others echo (line #16, #18, #21) are not displayed.
If you comment line #7 all echo are displayed.
Bye.