Windows 11 ARM64 UMDF2 driver signing

Hi,

we got an UMDF2 driver for a smartcard reader. On all (known) x86 & x64 plattforms including Windows 11 this driver is working perfectly.

The driver package is signed with a GlobalSign EV Code Signing Cert.
Furthermore the cert is installed in the “TrustedPublisher” cert store.

On Windows 11 ARM64 this does not seem to work.
If I disable “Driver Signature Enforcement” the driver is working with a “driver not signed” warning during installation.

If I open the “Digital signatures” dialog in the cat file properties, it shows that the digital signature is correct.

Can anyone help?

Regards

Kalle

Did you specify the ARM64 systems when you build the CAT file? Although that would have given a different error.