Hi Joris,
Thank you for reaching out to the Microsoft Community. I understand you're looking for a Windows 11 64-bit ARM driver for the CanoScan LiDE 400. To assist you more accurately, could you please confirm the exact model of your Surface device?
As far as I’m aware, Canon currently does not provide an official ARM64 driver for the CanoScan LiDE 400. This means that if you're using an ARM-based device like the Surface Pro X, the scanner may not function correctly due to driver incompatibility.
I recommend contacting Canon directly to inquire about ARM driver support or to check if any beta versions are available. You can also visit Canon’s official support page for the LiDE 400 for more information.
I hope this information is helpful. Feel free to reply for better understanding.
Regards,
Edward Schlobohm