Windows 11 enforces driver signature enforcement. Older Canon drivers may lack a SHA-2 signature.
The story of finding a Windows 11 driver for this "old reliable" machine is a classic tale of digital detective work. While Canon often tells users there is no official driver for newer operating systems, many have discovered that drivers for older Windows versions—specifically Windows 7 or 8.1 —often work perfectly on Windows 11. The Quest for the Windows 11 Driver canon f158 200 driver windows 11
If the above steps fail entirely, you have two remaining options: Windows 11 enforces driver signature enforcement