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CDC driver Windows 8


Hi there,

I try to install the usbser.sys driver using the inf-file located at
I get an error message saying that the NON-Microsoft inf-file does not a digital signature…

any ideas?


@ freeck - Googling something like “windows 8 install without digital signature” may give you some clues.


This worked for me:


:-[ thanks guys , problem solved.


@ freeck -

thanks guys , problem solved.[/quote]
and how did you fix, please ? :slight_smile:


Well, by following the suggestion to enable installing unsigned drivers by disabling the driver signature check…