Read the Canon Software License Agreement. Click "Yes" to proceed.
Since official Windows 7 support is lacking for this model, if the generic driver does not work, the most stable solution is to upgrade your computer to Windows 10 or connect the printer to a newer PC on the same network and share it with the Windows 7 machine. canon lbp226dw driver windows 7 32bit link
An unusual inclusion in the box for many imageCLASS LBP226dw users is a small, unexplained piece of plastic Read the Canon Software License Agreement
Use Canon’s European/global support site where legacy drivers are kept. Download the 32-bit Windows 7 driver package labeled for LBP226dw / UFR II: https://www.canon-europe.com/support/consumer_products/products/printers/laser/i-sensys_lbp226dw.html An unusual inclusion in the box for many
If the specific LBP226dw driver isn't listed, these "Generic Plus" drivers are designed by Canon to support multiple models within the same series.