How to fix Canon print spooler error?

How to Fix Canon Print Spooler Error?

Canon printers are widely trusted for their reliability, excellent print quality, and user-friendly design. However, like any printer, they can run into problems that interrupt smooth printing. One common issue that frustrates many users is the print spooler error.

If you’ve ever tried printing a document only to see an error message about the print spooler, you’re not alone. The print spooler is a small application in your operating system (Windows or macOS) that manages print jobs by queuing them and sending them to the printer in the correct order. When it fails, your Canon printer may stop working, leaving print jobs stuck in the queue.

What is a Print Spooler?

The print spooler is a background service on your computer that manages all print jobs. Instead of sending documents directly to the printer, your operating system places them in a spool (queue) managed by the spooler. The spooler then sends documents one at a time to the printer, ensuring smooth and orderly printing.

When the print spooler works correctly:

Multiple print jobs are organized and processed in sequence.
The user can continue working while printing happens in the background.
Communication between the printer driver and the Canon printer hardware is seamless.

When it fails:

Print jobs get stuck in the queue.
You may see messages like “Print Spooler Service Not Running” or “Spooler Subsystem App Has Stopped Working”.
The Canon printer may appear offline or fail to print.

Common Causes of Canon Print Spooler Error

Corrupted Print Jobs – A faulty document in the queue can block the spooler.
Outdated or Corrupt Printer Drivers – If your Canon printer driver is incompatible, the spooler may crash.
Malware or Viruses – Malware infections can damage system services, including the spooler.
Too Many Print Jobs – An overloaded queue can freeze the spooler.
Third-Party Software Conflicts – Some applications interfere with printer processes.
Windows or macOS Updates – After major updates, spooler services may fail due to compatibility issues.

How to Fix Canon Print Spooler Error on Windows

Since most Canon printer users are on Windows, let’s start there.

Solution 1: Restart the Print Spooler Service

Press Windows + R to open the Run dialog.
Type services.msc and press Enter.
In the Services window, scroll to Print Spooler.
Right-click and select Restart.

This clears temporary glitches and restarts the spooler.

Solution 2: Clear the Print Queue

Open Control Panel > Devices and Printers.
Right-click your Canon printer and select See what’s printing.
In the queue window, click Cancel All Documents.
Restart the spooler service as explained above.

This removes stuck print jobs that may be causing the error.

Solution 3: Delete Spooler Files Manually

Stop the spooler service:
- Open services.msc, right-click Print Spooler, and choose Stop.
Navigate to C:\Windows\System32\spool\PRINTERS.
Delete all files inside the folder (these are stuck jobs).
Restart the spooler service.

Solution 4: Update or Reinstall Canon Printer Drivers

Visit the Canon Support website.
Enter your printer model and download the latest driver.
Uninstall the current driver from your system.
Reinstall the updated driver.

This ensures compatibility and resolves driver-related spooler issues.

Solution 5: Run Windows Troubleshooter

Go to Settings > Update & Security > Troubleshoot.
Select Printer Troubleshooter.
Follow on-screen instructions to detect and fix problems.

Solution 6: Check for Windows Updates

Sometimes Microsoft releases patches that fix spooler-related errors.

Go to Settings > Update & Security > Windows Update.
Install pending updates.
Restart your computer.

Solution 7: Use Command Prompt

Open Command Prompt as Administrator.
Type the following commands:

net stop spooler
del /Q /F %systemroot%\System32\spool\PRINTERS\*
net start spooler

Press Enter after each command.

This resets the spooler and clears jobs.

How to Fix Canon Print Spooler Error on Mac

Though spooler issues are more common on Windows, they also occur on macOS.

Solution 1: Reset the Printing System

Go to System Preferences > Printers & Scanners.
Right-click (or Control + Click) in the printer list.
Select Reset Printing System.
Re-add your Canon printer.

Solution 2: Delete Print Jobs Manually

Open the Print Queue from Printers & Scanners.
Cancel all documents.
Restart your Mac.

Solution 3: Update Canon Printer Drivers on Mac

Go to Canon’s support website.
Download the latest macOS driver.
Install and restart your Mac.

Solution 4: Run macOS Software Update

Go to System Preferences > Software Update.
Install all pending updates.

Solution 5: Reinstall Printer

Remove your Canon printer from Printers & Scanners.
Re-add it using + Add Printer option.

Advanced Fixes

If basic solutions don’t work, try these advanced methods:

Check for Malware: Run a full system scan using antivirus software.
System File Checker (Windows): Run sfc /scannow in Command Prompt.
Registry Fix (Windows): Sometimes spooler errors are linked to corrupt registry entries. Tools like CCleaner can help repair them.

Preventive Tips to Avoid Print Spooler Errors

Regularly clear the print queue if you print large volumes.
Keep Canon printer drivers updated.
Avoid sending corrupted or unsupported file formats to the printer.
Use official Canon software instead of third-party printer tools.
Keep your operating system updated.
Restart your printer and PC periodically to refresh spooler services.

When to Contact Canon Support

If none of the above methods resolve the issue, you may need professional help. Contact Canon support if:

The spooler service crashes repeatedly.
You get persistent error codes after updates.
The printer won’t print even after driver reinstallation.

Conclusion

The Canon print spooler error can be annoying, but it is usually easy to fix with a few troubleshooting steps. From restarting the print spooler service and clearing the queue to reinstalling Canon drivers and updating your system, there are multiple ways to resolve this issue.

By keeping your printer drivers and operating system up to date, and following preventive tips, you can minimize the chances of spooler errors in the future.

So, the next time your Canon printer shows a print spooler error, don’t panic—just follow this guide and get back to printing smoothly.