Fix Scan to Computer No Longer Activated?

If your printer’s “Scan to Computer” feature suddenly says it’s no longer activated, the fix is usually to re-enable the setting in the printer’s own software or on the printer’s control panel, then restart both the printer and the computer. Below is a step-by-step guide for the most common causes, plus what to do when the standard fix doesn’t work.

Why “Scan to Computer” Deactivates

This feature is designed to turn off automatically after a period of inactivity on many printers, especially those used in shared or office environments. The printer’s firmware or the companion software (like HP Smart, Epson Scan, or Canon IJ Scan Utility) has a timeout setting that disables the scan destination to save resources or prevent unauthorized use. Other common triggers include:

• A firmware update that resets all custom settings to factory defaults.
• Windows or macOS update that changes firewall or network permissions.
• The printer’s IP address changed, so the computer can no longer find it.
• The companion software was updated or reinstalled, losing the saved profile.
• Multiple computers are connected, and one of them turned off the feature.

How to Re-enable It (Windows)

1. Open the printer’s companion software (e.g., HP Smart, Epson Scan, Canon IJ Scan Utility). If you don’t have it, download it from the manufacturer’s support site — don’t use a third-party download site.
2. Look for a section called “Scan,” “Scan to Computer,” or “PC Connection.” In HP Smart, it’s under “Scan” then “Scan to Computer.” In Epson, it’s in “PC Connection” settings.
3. Toggle the setting to “On” or “Enabled.” If there’s a checkbox for “Always keep scan to computer active,” check it.
4. On the printer’s control panel, go to the Scan menu and choose “Scan to Computer.” Select your computer’s name from the list of destinations.
5. Restart both the printer and the computer. Then try scanning again.

How to Re-enable It (macOS)

macOS uses a slightly different approach because the printer driver and the scanning software are separate. The scan-to-computer feature relies on the printer being shared through the system, and the companion app must have permission to access the network.

1. Open System Settings (or System Preferences on older macOS) > Printers & Scanners.
2. Select your printer and click “Options & Supplies.” Look for a “Scanner” tab — make sure “Scan to Computer” or “Remote Scan” is enabled.
3. Open the printer’s companion app (e.g., HP Smart) and check its settings for a similar toggle.
4. If the printer is on a network, ensure it’s on the same Wi-Fi network as your Mac. Go to the printer’s control panel to check its network status.
5. If the toggle is already on, turn it off, wait 10 seconds, then turn it back on. This often refreshes the connection.

If the Toggle Is Already On

Sometimes the setting appears active, but the computer still says it’s not activated. This usually points to a connection issue rather than a settings issue.

• Check the printer’s IP address. Print a network configuration page from the printer’s menu. Then on your computer, open a web browser and type that IP address. You should see the printer’s embedded web server. If you can’t, the printer and computer are not on the same network.
• Update the printer driver. Go to the manufacturer’s support site, search for your exact model, and download the latest driver for your operating system. Install it and restart.
• Disable and re-enable the printer in Windows: Settings > Bluetooth & devices > Printers & scanners. Select the printer, click “Remove device,” then “Add device” to reinstall it.
• Check firewall or security software. Windows Defender Firewall or a third-party antivirus may block the printer’s scan ports (usually port 9100 for printing, but scanning uses other ports). Temporarily disable the firewall to test — if scanning works, add an exception for the printer software.

Common Misconception: It’s a Printer Problem

Many users assume the printer hardware is failing, but “Scan to Computer” is a software feature that depends on a stable network connection and the companion app. The printer itself is almost always fine. The error message appears on the computer, not the printer, which is a clue that the issue is on the computer side. Before contacting support, try scanning from the printer’s control panel to a USB flash drive — if that works, the scanner hardware is fine.

Alternatives When You Can’t Re-enable It

If the feature won’t re-enable no matter what you try, you can still scan using these methods:

• Use the Windows Fax and Scan app (built-in) — it can scan from a connected or networked printer without the manufacturer’s software.
• On macOS, use the built-in Image Capture app. It supports most scanners and lets you save directly to a folder.
• Scan to a USB drive if your printer has a USB port. You can then plug the drive into your computer.
• Use the printer’s email feature — many printers can send a scan directly to an email address. Set this up via the printer’s embedded web server.
• Use a third-party scanning app like VueScan, which supports a wide range of printers and often bypasses the manufacturer’s software entirely.

How to Prevent It From Happening Again

Once you’ve re-enabled the feature, take steps to keep it active:

• In the companion software, look for a setting like “Keep scan to computer active” or “Disable timeout.” Turn it on.
• Assign a static IP address to the printer in your router’s DHCP reservation settings. This prevents the IP from changing after a reboot.
• Set the printer to sleep mode instead of fully off when not in use. Some printers deactivate the feature when they enter deep sleep.
• After any firmware update, check the scan settings — updates often reset them.

Frequently Asked Questions

Why does my HP printer keep turning off scan to computer?

HP printers have a power-saving feature that turns off the scan-to-computer function after a period of inactivity (often 30 minutes). In HP Smart, go to Scan > Scan to Computer and enable the option “Keep scan to computer active.” Also check the printer’s Energy Settings and disable the auto-off feature if you want it to stay on.

Can I fix scan to computer without reinstalling the driver?

Yes, often you can just restart the printer and the computer. If that doesn’t work, try turning the setting off and on in the companion software. Reinstalling the driver is a last resort, but it’s not always necessary.

Why does my Epson printer say scan to computer is disabled?

Epson’s Scan to Computer feature is controlled by the Epson Scan Utility. Open it, go to “PC Connection” and make sure the “Scan to PC” option is set to “On.” Also, check that the Epson Scan Utility is running in the background — if it’s closed, the printer may not accept scan jobs.

Does scan to computer work over Wi-Fi?

Yes, it works over Wi-Fi, but both devices must be on the same network. If you have a dual-band router, make sure the printer and computer are on the same band (2.4 GHz or 5 GHz). Some printers only support 2.4 GHz, so if your computer is on 5 GHz, they won’t see each other.

What if I don’t have the manufacturer’s software?

You can still scan using the built-in Windows Fax and Scan or macOS Image Capture. However, the “Scan to Computer” feature specifically requires the manufacturer’s software because it registers the computer as a destination on the printer. Without it, you’ll need to initiate scans from the computer, not the printer.

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