If your Canon Printer Won't Scan, don't assume the scanner is damaged. In many cases, scanning stops because of a connection problem, incorrect settings, outdated software, WiFi issues, or a temporary error on your computer.
A Canon Printer Not Scanning may still print normally because printing and scanning can rely on different software components and settings. This simple guide explains what to check when your Canon Scanner Not Working on Windows, Mac, USB, or WiFi.
Before changing any settings, check whether your printer is powered on and showing an error message. Also make sure the document is placed correctly on the scanner glass or in the automatic document feeder, if your model has one.
Common reasons a Canon printer may not scan include:
Loose or faulty USB connection
Printer disconnected from WiFi
Computer and printer cannot communicate over the network
Wrong scanner selected
Scanner software not working properly
Outdated or incompatible software
Temporary computer or printer error
Firewall blocking network communication
Try the following troubleshooting steps one at a time.
Start with a simple restart.
Turn off your Canon printer and unplug it from the power source. Wait about 30–60 seconds, reconnect it, and turn the printer back on.
Restart your computer as well.
Once both devices are ready, try scanning a document again. Restarting can clear temporary communication errors that cause the Canon Printer Won't Scan problem.
If your Canon printer connects directly to the computer with USB, inspect the connection.
Disconnect the USB cable and reconnect it securely. Try another USB port on your computer if the scanner is still not detected.
If possible, connect the printer directly to the computer rather than through an unpowered USB hub while troubleshooting.
A damaged or unreliable cable can also prevent scanner communication, so test another compatible cable if available.
If you scan wirelessly, make sure the Canon printer is connected to your current WiFi network.
Your printer and computer should be connected to a local network that allows the devices to communicate.
If you recently changed your WiFi password, router, or network name, reconnect the Canon printer using the new network information.
Restarting the router can also help resolve temporary wireless communication problems.
If several printers or scanners are installed on your computer, the scanning application may be trying to communicate with the wrong device.
Open your scanning application and check the selected scanner. Make sure your current Canon printer or scanner model is selected.
Remove old or unused printer entries if they are causing confusion.
This simple check can sometimes resolve a Canon Printer Not Scanning issue immediately.
Open the scanning software you normally use and check whether it detects your Canon device.
If the application is frozen or not responding, close it completely and reopen it. You can also restart the computer before trying again.
Depending on your Canon model, different scanning utilities and features may be available. Make sure the software you are using is appropriate for your exact printer model and operating system.
Windows computers use a service called Windows Image Acquisition (WIA) for scanner communication.
If your Canon Scanner Not Working on Windows, check whether this service is running.
Press Windows + R, type services.msc, and press Enter. Locate Windows Image Acquisition (WIA).
If the service is stopped, start it. If it is already running, restarting the service may help.
Try scanning again after completing this step.
Software problems can cause a computer to stop detecting the scanning function.
If your Canon Printer Won't Scan after an operating-system update or software change, check whether appropriate software is available for your printer model and current operating system.
If the correct software is already installed, reinstalling it may help repair damaged components.
Use Canon's official regional support resources when obtaining printer or scanner software rather than downloading drivers from unknown websites.
A firewall or security program may occasionally prevent a wireless scanning application from communicating with the printer.
If printing works but wireless scanning does not, review your firewall settings and make sure legitimate Canon scanning software is permitted to communicate over your local network.
Do not permanently disable your firewall or other security protection simply to make the scanner work.
An outdated printer configuration can cause detection problems.
On Windows, open Settings > Bluetooth & devices > Printers & scanners. Select your Canon printer and remove it. Restart the computer and add the printer again.
On Mac, open System Settings > Printers & Scanners, remove the affected device, and then add it again.
Once the printer is installed, test both printing and scanning.
If your Canon printer prints normally but does not scan, the basic printer connection may be working while the scanner configuration has a separate problem.
Check whether your computer recognizes the scanner. Verify the selected scanning device and review the scanning software.
Windows users should also check the WIA service. For wireless scanning, confirm that the printer and computer can communicate over the local network.
If the Canon Printer Not Scanning problem only happens over WiFi, start by restarting your printer and router.
Confirm that the printer is connected to the correct network and that the computer can communicate with it.
If you recently replaced your router, reconnect the printer using the new network credentials. You may also need to remove the old printer configuration from your computer and add the printer again.
When a Canon Scanner Not Working on Windows 11, check the USB or WiFi connection first.
Restart the Windows Image Acquisition service and verify that your scanning application recognizes the correct Canon device.
If the problem appeared after a Windows update, check for software compatible with your current operating-system version and exact printer model.
Mac users should open System Settings > Printers & Scanners and check whether the Canon printer appears.
Verify the USB or WiFi connection and make sure your Mac can detect the device. If necessary, remove the printer and add it again.
Also check whether your scanning software is appropriate for your current macOS version.
Common causes include USB or WiFi connection problems, incorrect scanner selection, software issues, firewall settings, or a scanner that is not being detected by the operating system.
Printing and scanning can use different software components. Your printer connection may work while the scanning software, scanner configuration, or related system service has a problem.
Check the USB cable or wireless connection, restart your devices, verify that the correct scanner is selected, and check the appropriate scanner software.
Reconnect the USB cable or make sure the printer is connected to the correct WiFi network. If the computer still cannot detect it, remove and add the printer again.
Reinstallation can help when the scanning software is corrupted or no longer working correctly. Make sure you use software appropriate for your exact Canon model and operating system.