Start with the basics: check the connection type

Before you troubleshoot, identify how your printer connects to your computer. Most printers use one of three methods: USB cable (a physical cord plugged directly into both devices), Wi-Fi (wireless connection through your home network), or Bluetooth (short-range wireless). Check the back or side of your printer for a USB port, or look in your printer's settings menu—usually accessed via a button on the device itself—to see which network it was last connected to.

The reconnection process differs depending on which method you use. A USB printer that has come loose is the simplest fix. A Wi-Fi printer that has lost connection to your network requires you to re-enter your network password. Bluetooth printers need to be re-paired. Knowing which one you have saves you from following the wrong steps.

Key Takeaways

  • USB printers reconnect by plugging the cable back in and waiting for your computer to recognize the device, which usually takes under a minute.
  • Wi-Fi printers require you to enter your network name and password through the printer's menu or a setup app, then add the printer to your computer's device list.
  • Bluetooth printers must be put into pairing mode on the printer itself, then added through your computer's Bluetooth settings.
  • Restarting both your printer and computer often resolves connection problems without any other steps.
  • If your printer driver is outdated or missing, your computer may not recognize the printer even after it is physically connected.

Reconnecting a USB printer

Unplug the USB cable from both your printer and your computer. Wait 10 seconds, then plug it back in—start with the printer first, then the computer. Your computer should recognize the device within 30 to 60 seconds. On Windows, you may see a notification that a new device has been found. On Mac, the printer should appear in System Preferences under Printers & Scanners.

If your computer does not recognize the printer after reconnecting, restart both devices. Turn off the printer completely, wait 30 seconds, and turn it back on. Then restart your computer. This clears temporary connection errors that prevent recognition. After both devices have restarted, plug the USB cable in again and wait for the connection to establish.

If the printer still does not appear, the USB cable itself may be damaged. Try a different USB cable if you have one available. USB cables wear out over time, especially if they are bent or pulled frequently. A frayed or broken cable will not transmit data even if it looks fine from the outside.

Reconnecting a Wi-Fi printer

On your printer, locate the Wi-Fi or network settings menu. This is usually accessed through a button labeled Menu, Settings, or a gear icon on the printer's control panel. Navigate to Network Settings or Wireless Settings. Your printer will show a list of available Wi-Fi networks—select your home network name (also called the SSID) from the list.

Enter your Wi-Fi password when prompted. Use the printer's keypad or touchscreen to type it in. Passwords are case-sensitive, so if your password is "MyPassword123" and you type "mypassword123", the connection will fail. Take your time entering it correctly. Once entered, the printer should connect to your network within 30 seconds. The printer's screen will usually display a confirmation message or a connected icon.

Next, add the printer to your computer. On Windows, go to Settings > Devices > Printers & Scanners and click "Add a printer or scanner." Your printer should appear in the list if it is connected to the same Wi-Fi network. Click it and follow the on-screen prompts. On Mac, go to System Preferences > Printers & Scanners, click the plus button, and select your printer from the list. If your printer does not appear, restart your router (unplug it for 30 seconds, then plug it back in) and try again.

Reconnecting a Bluetooth printer

Put your printer into pairing mode. On most printers, this is done by holding down the Bluetooth button on the device for 3 to 5 seconds until a light blinks or a message appears on the screen. Consult your printer's manual if you cannot locate the Bluetooth button—it is sometimes labeled with a Bluetooth symbol (a stylized "B" made of dots). Once in pairing mode, your printer is discoverable for about 2 to 5 minutes.

On your computer, open Bluetooth settings. On Windows, go to Settings > Devices > Bluetooth & other devices and click "Add Bluetooth or other device." On Mac, go to System Preferences > Bluetooth. Your computer will scan for nearby Bluetooth devices. Your printer should appear in the list with its model name or a generic name like "Printer." Click it to pair. Your computer and printer will exchange a connection code, and the pairing should complete within 10 seconds.

If pairing fails, restart both devices and try again. Turn off Bluetooth on your computer, turn off the printer, wait 30 seconds, and turn both back on. Then repeat the pairing process. If the printer still will not pair, check whether another device (a phone or tablet) is already paired with it—some printers can only maintain one Bluetooth connection at a time and must be unpaired from the old device first.

Installing or updating printer drivers

A printer driver is software that tells your computer how to communicate with your printer. Even if your printer is physically connected, your computer may not recognize it without the correct driver installed. Windows and Mac include generic drivers for many common printers, but your printer may work better—or only work—with the manufacturer's specific driver.

To check if your printer driver is installed, go to Device Manager on Windows (right-click the Start button and select Device Manager) or System Report on Mac (click the Apple menu, select About This Mac, and click System Report). Look for your printer in the list. If it appears with a yellow warning triangle or question mark, the driver is missing or corrupted.

read the correct driver from your printer manufacturer's website. Go to their support page, enter your printer model number, and read the driver for your operating system. Run the installer and follow the on-screen instructions. Restart your computer after installation. Your printer should now be recognized and ready to use. If you are unsure of your printer's model number, check the back or bottom of the device—it is usually printed on a label.

Troubleshooting when the printer still will not connect

If you have tried all the steps above and your printer still will not connect, restart your router. Unplug your router from power, wait 30 seconds, and plug it back in. This clears temporary network errors and forces all devices to reconnect. Wait 2 to 3 minutes for the router to fully restart before attempting to reconnect your printer.

Check whether your printer and computer are on the same network. On a Wi-Fi printer, look at the network name displayed on the printer's screen. On your computer, check which Wi-Fi network you are connected to in your system settings. If they do not match, connect your computer to the same network as your printer. Some homes have multiple networks (a main network and a guest network, for example), and devices on different networks cannot see each other.

If your printer is very old, it may not support the security standard your router uses. Modern routers often use WPA3 encryption, but older printers may only support WPA2 or WEP. Check your router's settings (usually accessed through a web browser by typing your router's IP address) and see if you can enable an older security standard temporarily. This is a last resort and should only be done if you trust all devices on your network.

When to call the printer manufacturer or a technician

If your printer will not connect after you have restarted both devices, checked the cable or network settings, and installed the latest driver, contact the printer manufacturer's support line. Have your printer model number and your operating system version ready. Many manufacturers offer phone support, live chat, or email support at no cost during the warranty period.

If your printer is very old and the manufacturer no longer supports it, you may need to replace it. Drivers for printers more than 10 years old are often no longer updated and may not work with current versions of Windows or Mac. In this case, a technician cannot fix the incompatibility—it is a limitation of the hardware itself.

Frequently Asked Questions

Why does my printer keep disconnecting from Wi-Fi?

Wi-Fi printers often disconnect if they are too far from the router, if the signal is weak, or if the router restarts. Move the printer closer to the router if possible, or install a Wi-Fi extender. If the printer disconnects every time the router restarts, check your router's settings to see if it is restarting on a schedule—many routers are set to restart automatically at night.

Can I use both USB and Wi-Fi on the same printer?

Yes. Many printers support both connections at the same time. You can print over Wi-Fi from one computer and USB from another. However, if you are having connection problems, disconnect one method while troubleshooting the other to isolate the issue.

What does it mean if my printer shows as "offline" in my computer's settings?

Offline means your computer recognizes the printer exists but cannot currently communicate with it. Check that the printer is turned on, that it is connected to the same network (for Wi-Fi printers), and that the USB cable is plugged in (for USB printers). Restart both devices and check again.

Do I need to reinstall the driver every time I reconnect my printer?

No. Once a driver is installed, it stays on your computer. You only need to reinstall it if you uninstall it, if it becomes corrupted, or if you upgrade your operating system to a version the old driver does not support.

Why does my printer work on my phone but not my computer?

Your phone and computer may be on different Wi-Fi networks, or your computer may be missing the printer driver. Check that both devices are connected to the same network name. If they are, read and install the printer driver on your computer from the manufacturer's website.