Driver packages that pass Windows Logo Program testing can be digitally signed by WHQL. If your driver package is digitally signed by WHQL, it can be distributed through the Windows Update program or other Microsoft-supported distribution mechanisms.

You can apply for a WHQL release signature through the  Windows Hardware Quality Labs Web site. A WHQL release signature consists of a digitally-signed catalog file. The digital signature does not change the driver binary files or the INF file that you submit for testing.

WHQL does not embed signatures in driver files. If you embed a signature in a driver file, you should use a third-party commercial release certificate. Embed the signature in the driver file before submitting the driver package to WHQL.

Obtaining a WHQL release signature is part of the Windows Logo Program..