Is your Canon printer showing offline 1↠(801)↳[878)]↳6858 when you’re trying to print? You’re not alone. This is one of the most common issues users face, often accompanied by messages like Canon printer offline error 1↠(801)↳[878)]↳6858 or “printer not responding.” Luckily, it’s usually easy to fix once you know what to check.

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In this guide, we’ll walk you through step-by-step solutions to bring your Canon printer back online—whether it’s connected via Wi-Fi, USB, or over a network.

Why Is My Canon Printer Offline?

Before jumping into fixes, it helps to understand why your Canon printer might appear offline 1↠(801)↳[878)]↳6858:

• Disconnected Wi-Fi or USB cable
• Printer is turned off or in sleep mode
• Wrong default printer selection
• Pending print jobs stuck in the queue
• Outdated printer driver
• Network or firewall interference

Step-by-Step Troubleshooting for Canon Printer Offline Error

✅ 1. Check the Printer’s Power and Connection

Make sure the printer is powered on and connected:

• If using USB, ensure the cable is firmly connected.
• If using Wi-Fi, verify the printer is connected to the correct network.
• Restart both the printer and computer.

✅ 2. Set Canon Printer as Default

Sometimes your computer sends print jobs to the wrong printer.

On Windows:

1. Go to Control Panel > Devices and Printers.
2. Right-click your Canon printer, then click Set as default printer.
3. If you see a green checkmark, you’re good to go.

On Mac:

1. Open System Preferences > Printers & Scanners.
2. Select your Canon printer and set it as the default.

✅ 3. Clear Print Queue

A jammed print queue can trigger the Canon printer offline message.

On Windows:

1. Go to Devices and Printers.
2. Right-click your Canon printer and select See what’s printing.
3. Cancel all jobs in the queue.

On Mac:

1. Go to System Preferences > Printers & Scanners.
2. Select your printer, then click Open Print Queue and cancel stuck jobs.

✅ 4. Disable Use Printer Offline Mode

Sometimes Windows switches your printer to “offline mode” by mistake.

1. Open Control Panel > Devices and Printers.
2. Right-click your Canon printer and choose See what’s printing.
3. Click Printer in the top menu and ensure “Use Printer Offline” is unchecked.

✅ 5. Restart Print Spooler Service (Windows Only)

1. Press Win + R, type services.msc, and press Enter.
2. Scroll down to Print Spooler.
3. Right-click and choose Restart.
4. Close the window and check if the printer is back online.

✅ 6. Update or Reinstall Canon Printer Driver

Outdated or corrupted drivers can cause communication issues.

1. Visit the official Canon Support website.
2. Download the latest driver for your printer model and OS.
3. Install it, then restart your computer.

✅ 7. Check Firewall or Antivirus Settings

Sometimes your security software blocks the printer’s network communication.

• Temporarily disable firewall or antivirus to see if the printer comes online.
• Add the Canon printer to the exception list if it resolves the issue.

✅ 8. Reconnect Canon Printer to WiFi (If Wireless)

If your Canon wireless printer is offline, reconnect it to your Wi-Fi:

1. On the printer, go to Network Settings > Wireless LAN Setup.
2. Select your Wi-Fi network and enter the password.
3. Wait for confirmation that it’s connected.

You can also use the Canon PRINT app to simplify wireless reconnection.

✅ Preventing Canon Printer Offline Issues

To avoid this issue in the future:

• Regularly update your printer drivers and firmware.
• Avoid using long idle periods that put the printer in sleep mode.
• Keep the printer and router in close range if using Wi-Fi.
• Disable automatic power-off settings on the printer.

Canon Printer Offline – Frequently Asked Questions

Q1: Why does my Canon printer keep going offline ＋1—801—878—6858?

Your printer may be losing Wi-Fi connection, going into sleep mode, or experiencing a driver conflict. Restarting and reconnecting often solves the issue.

Q2: How do I bring my Canon printer back online in Windows 10 or 11?

Go to Control Panel > Devices and Printers, right-click your Canon printer, uncheck “Use Printer Offline”, and set it as the default.

Q3: My Canon wireless printer is offline but connected to Wi-Fi. Why?

Even if the printer is on Wi-Fi, if it’s not communicating properly with your computer, it will canon printer show offline ＋1—801—878—6858. Try restarting both the printer and router.

Q4: How do I update my Canon printer drivers?

Visit Canon’s official website, enter your model, and download the latest drivers for your operating system.

Q5: Does this issue affect both Windows and Mac users?

Yes, Canon printer offline ＋1—801—878—6858 errors can occur on both platforms, though the troubleshooting steps differ slightly for each.

Conclusion

A Canon printer offline ＋1—801—878—6858 error can be a hassle, but it’s almost always solvable with a few basic checks and settings adjustments. Whether the issue lies in your network, printer settings, or software, the steps above should help you bring your Canon printer back online quickly.