Then Signtool error: The signing certificate is not valid for the requested usage >signtool verify /v /kp /c "xx.cat" "xx.sys" I get no errors or warnings, files successfully signed When I use the signtool to sign the cat and sys files. That certificate is also valid and usage is 'Certificate signing, CRL signing' the 'path' indicates that the cross certificate is by Verisign. I checked in the certificate store and it is installed, and valid, usage is 'Digital Signature'. I have a valid 'company signing certificate' (pfx file). The error reports that the driver is not digitally signed (or not trusted)
after it worked in house during testing (on Win 10 64 bit). We are having issues with a USB driver install in the field (on a new Win 10 64 bit computer).
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