Go to the official Canon support page for your specific scanner model (e.g., DR-C225, DR-M160II).
If you had a previous version that didn't uninstall correctly, the new installer might get confused. Canon Registry Restoration Tool
Do not panic. Follow these methods in order. The first solution works for roughly 70% of users.
If you have an older version installed and are receiving this error during an update, Canon provides specific patches (like version 3.1.12 ) to fix "phenomena" that interrupt setup.
If you have tried all the above and still see "Capture Perfect 3.1 is not found," the harsh reality is that (especially Windows 11 or 64-bit only systems).
