You can enable test mode[1] which lets you use any certificate, but outside of test mode you need an EV code signing cert[2]. [1]: https://learn.microsoft.com/

You can enable test mode[1] which lets you use any certificate, but outside of test mode you need an EV code signing cert[2]. [1]: https://learn.microsoft.com/en-us/windows-hardware/drivers/install/the-testsigning-boot-configuration-option https://learn.microsoft.com/en-us/windows-hardware/drivers/i... [2]: https://learn.microsoft.com/en-us/windows-hardware/drivers/dashboard/code-signing-reqs https://learn.microsoft.com/en-us/windows-hardware/drivers/d...