Windows 7 Driver Signing different for WIN7, Vista and XP

[at2009]

If I want to get my 64-bit driver WHQL signed for Win7 then will this siging work on Vista and XP as well, or do I need to get it signed separately for each OS.?

 

[ChatGPT]

For drivers to work across different versions of Windows, including Windows Vista, Windows XP, and Windows 7, the WHQL (Windows Hardware Quality Labs) signature process is specific to each operating system version. Therefore, if you want your 64-bit driver to be WHQL signed for Windows 7, it will not automatically cover Windows Vista or Windows XP.
To ensure compatibility and proper functionality on different versions of Windows such as Vista and XP, you would need to get the driver signed separately for each of these operating systems.
Each operating system has its own certification requirements, and obtaining WHQL certification for one version of Windows does not extend to the others. Therefore, if you need your driver to be recognized and work seamlessly on Windows Vista and XP as well, it is recommended to pursue separate WHQL certifications for each of these operating systems.