When your printer prints normally but refuses to scan, the problem can be frustrating—especially when you need to digitize an important document quickly. A printer won’t scan for many reasons, including connection problems, outdated scanner drivers, incorrect settings, disabled scanning services, software conflicts, or hardware issues.

Fortunately, most scanning problems can be resolved without replacing the printer. This guide explains how to troubleshoot a printer that won’t scan on Windows or Mac, covering both wireless and USB-connected devices.

Why Won’t My Printer Scan?

Before troubleshooting, it helps to understand what may be causing the problem. A printer may be able to print while its scanner remains unavailable because printing and scanning can use different drivers, services, and software components.

Common causes include:

• Printer or scanner is offline

• Weak or disconnected Wi-Fi connection

• Loose or damaged USB cable

• Computer cannot detect the scanner

• Scanner driver is outdated or corrupted

• Required scanning service is disabled

• Incorrect scanner selected in the scanning application

• Firewall or security software is interfering with communication

• Operating system update caused compatibility problems

• Scanner hardware has an error

Start with basic checks before reinstalling software or changing advanced settings.

1. Restart the Printer and Computer

A restart is one of the simplest ways to resolve temporary scanner communication problems.

Turn off your printer and computer. Disconnect the printer's power cable and wait about 30–60 seconds. Reconnect the power cable and turn the printer back on. Once it is fully ready, restart your computer.

Try scanning again. If the printer still won’t scan, continue with the connection checks.

2. Check the Printer Connection

If you are using a USB printer, make sure the cable is securely connected to both the printer and computer. Try another USB port if available. Avoid connecting through an unpowered USB hub while troubleshooting.

For a wireless printer, confirm that the printer is connected to the correct Wi-Fi network. Your computer and printer generally need to be reachable over the same local network for normal network scanning.

If the printer recently lost its Wi-Fi connection, reconnect it using its control panel or network setup process.

3. Check Whether the Computer Detects the Scanner

Your computer must recognize the scanning component of the multifunction printer.

On Windows, open Settings > Bluetooth & devices > Printers & scanners and check whether your device appears.

If the scanner is missing, remove the device and add it again where appropriate. You can also check Device Manager for scanner, imaging-device, or multifunction-device entries showing warning symbols.

On Mac, check System Settings > Printers & Scanners and confirm that your multifunction device appears correctly.

4. Try a Different Scanning Application

Sometimes the printer itself is working correctly, but the application being used to scan has stopped responding.

Close your normal scanning software and test the scanner with another compatible scanning application provided by your operating system or printer manufacturer.

Make sure you select the correct scanner if multiple devices are listed.

If scanning works from another application, the problem is likely related to the original scanning software rather than the scanner hardware.

5. Update or Reinstall the Scanner Driver

An outdated or corrupted scanner driver is a common reason a printer won’t scan to computer.

Check the printer manufacturer's official support resources for drivers compatible with your exact printer model and operating system.

If the correct driver is already installed but scanning still fails, uninstalling and reinstalling the printer/scanner software may help.

After installation, restart the computer and test scanning again.

Avoid downloading printer drivers from unknown third-party websites because unofficial packages may be outdated, incompatible, or unsafe.

6. Check the Windows Image Acquisition Service

Windows uses the Windows Image Acquisition (WIA) service for communication with many scanners and cameras.

Press Windows + R, enter services.msc, and press Enter.

Find Windows Image Acquisition (WIA). Check that the service is running. If it is stopped, start it. If it is already running, restarting the service may resolve temporary scanning problems.

Then close the Services window and test the scanner again.

7. Remove and Re-Add the Printer

Incorrect or corrupted device configuration can prevent scanning.

On Windows, go to Settings > Bluetooth & devices > Printers & scanners, select the affected device, and remove it. Restart the computer and add the printer again.

On Mac, open System Settings > Printers & Scanners, remove the affected printer when appropriate, and add it again.

After re-adding the device, verify that both printing and scanning functions are available.

8. Check Firewall and Security Settings

Network scanning requires communication between your computer and printer. Security software or firewall settings can occasionally block this communication.

If the scanner works through USB but not Wi-Fi, network security settings may be involved.

Check whether your scanning software is permitted through your computer's firewall. Rather than permanently disabling security software, create the appropriate permission or exception when required.

Also make sure your network is not configured to isolate wireless devices from one another.

9. Check for Operating System Updates

System updates can fix compatibility bugs, but occasionally a recent update may also expose an outdated printer driver.

Check whether Windows or macOS has pending updates. Install appropriate updates, restart the computer, and test the scanner.

If the scanning problem started immediately after an operating-system update, check for an updated scanner driver or software package designed for the newer OS version.

10. Reset the Printer's Network Connection

If your printer prints or scans inconsistently over Wi-Fi, reconnecting it to the network may help.

Depending on the model, you may be able to reset only the printer's network settings rather than performing a complete factory reset.

Afterward, reconnect the printer to Wi-Fi and add it to your computer again.

Remember that resetting network settings can erase saved wireless information, so have your Wi-Fi credentials available before proceeding.

11. Test Scanning From Another Device

Testing another computer can help determine whether the problem is with the printer or the original computer.

If the printer scans successfully from another compatible computer, investigate the original computer's driver, scanning application, firewall, or operating-system configuration.

If scanning fails from every device while printing continues to work, the issue may be related to the scanner's software configuration or hardware.

12. Check the Scanner Hardware

Inspect the scanner glass and document feeder for visible obstructions. Make sure the scanner lid closes normally and that no packing material, transport lock, or foreign object is preventing scanner movement.

Listen when initiating a scan. Unusual grinding, clicking, or repeated mechanical noises can indicate a physical problem.

If the device displays an error code, use the printer manufacturer's documentation for that specific code rather than repeatedly restarting or resetting the machine.

Final Troubleshooting Checklist

When your printer won’t scan, start with the easiest solutions: restart the devices, verify USB or Wi-Fi connectivity, confirm that the scanner is detected, and test another scanning application. Next, update or reinstall the scanner driver, check required system services, remove and re-add the printer, and investigate firewall or network settings.

If scanning fails on multiple computers after software and connection troubleshooting, the scanner itself may require professional inspection or repair.

Frequently Asked Questions

Why is my printer printing but not scanning?

Printing and scanning can rely on different drivers, software components, and system services. Therefore, a printer may print successfully while scanning fails because of a scanner-driver, application, network, or scanning-service problem.

Why is my scanner not detected by my computer?

The scanner may not be detected because of a disconnected USB cable, Wi-Fi communication problem, missing driver, corrupted installation, or disabled system service. Reconnecting the device and reinstalling the appropriate scanner software can help.

How do I fix a printer that won't scan to my computer?

Restart the printer and computer, verify the connection, confirm that the scanner appears in system settings, try another scanning application, and update or reinstall the scanner driver. Windows users can also check the Windows Image Acquisition service.

Why won't my wireless printer scan?

A wireless printer may fail to scan if it has disconnected from Wi-Fi, moved to another network, received new network settings, or cannot communicate with the computer because of firewall or network-isolation settings.

Why did my printer suddenly stop scanning?

A scanner can suddenly stop working after a temporary communication failure, operating-system update, network change, driver problem, or scanning-software error. Restarting the devices and checking for updated drivers are useful first steps.

Should I reinstall the printer driver if scanning doesn't work?

Reinstallation can help when the scanner driver is missing, corrupted, or incompatible. Use the software intended for your exact printer model and operating-system version.

How do I know if my scanner has a hardware problem?

If the scanner fails on multiple compatible computers after connection and software troubleshooting—or makes abnormal mechanical noises or displays persistent hardware error codes—a physical scanner problem becomes more likely.

Can a firewall prevent my printer from scanning?

Yes. Network scanning depends on communication between the printer and computer. Firewall or security settings can sometimes block the required communication even when basic printing still works.

Why won't my printer scan after a Windows or macOS update?

The existing scanner software may not be fully compatible with the updated operating system. Check for a newer driver or scanning application compatible with your current OS version.

Do I need to replace my printer if the scanner doesn't work?

Not necessarily. Most scanning failures should first be investigated as connection, driver, software, service, or network problems. Replacement or repair should generally be considered only after these troubleshooting steps fail.