Why can't my computer see my printer via Wi-Fi and how can I fix it?

Have you sent a document to print, but the printer suddenly "disappeared" from the list of available devices? Or is your new printer refusing to connect to the network despite all your efforts? The problem is when The computer doesn't see the printer via Wi-Fi., occurs in 68% of wireless MFP users. The causes may lie in the printer's settings, router settings, operating system settings, or even physical interference.

In this article we will look at all possible scenarios — from a simple power outage to complex IP address conflicts. You will receive step-by-step instructions for Windows 10/11, macOS and popular router models (TP-Link, ASUS, Keenetic). And if the problem turns out to be hardware-related, you'll learn how to diagnose it without calling a technician.

First, check the obvious: is the Wi-Fi indicator on the printer lit, is wireless mode enabled, and is the connection not being blocked by antivirus software? If all is well, we'll move on to a more in-depth diagnosis.

1. Checking the basic settings of the printer and router

Start with physical diagnosticsMake sure that:

  • 🔌 The printer is plugged into a power outlet and the power indicator is on (not blinking red).
  • 📶 The Wi-Fi button on the printer is activated (on some models Canon And Epson it is hidden under the lid).
  • 🔄 The router is not overloaded (try rebooting it by disconnecting the power for 30 seconds).
  • 📡 The printer is within Wi-Fi range (no further than 10 meters from the router in the absence of walls).

If the Wi-Fi indicator on the printer is flashing orange or red, this indicates a connection error. On models HP LaserJet And Brother The blinking combination is explained in the user manual. For example, 3 short + 1 long means the network password is incorrect.

📊 What printer do you have?
HP
Canon
Epson
Brother
Xerox
Another

Check your router settings:

  1. Open the router's web interface (usually at 192.168.1.1 or 192.168.0.1).
  2. Go to the section Wireless Network (Wi-Fi) → Device List.
  3. Make sure the printer appears in the list of connected gadgets. If not, the problem is with the printer.

2. Reconnect the printer to the Wi-Fi network

If the printer was working before but suddenly is no longer detected, try reset network settings and reconnect it. Instructions vary depending on the model:

For printers HP:

  1. Press and hold the button Wi-Fi (or Wireless) on the printer panel for 5-10 seconds until the indicator flashes.
  2. Launch HP Smart on your computer or smartphone and follow the setup wizard.

For Canon And Epson:

  1. Go to the printer menu: Settings → Network settings → Reset Wi-Fi settings.
  2. Select your network from the list and enter the password (use the keyboard on the printer screen).

For Brother:

  1. Click Menu → Network → WLAN → Setup Wizard.
  2. Select SSID your network and enter the password.

Make sure your router is turned on and distributing Wi-Fi.

Check that the network password is correct

Disable the VPN on your computer (it may be blocking local devices)

Restart your printer and computer-->

If the printer does not find your network, try temporarily disable encryption in the router settings (set Security Type: Open Network). After connecting the printer, return the settings back.

⚠️ Attention: Some printers (Xerox WorkCentre, old models Samsung) do not support modern encryption standards WPA3If your router only works in wireless mode WPA3, switch it to WPA2/WPA3 (mixed mode).

3. Checking network settings on your computer

If your printer is connected to Wi-Fi but your computer can't see it, the problem may lie in your operating system settings. Follow these steps:

For Windows 10/11:

  1. Open Settings → Devices → Printers & Scanners.
  2. Click Add a printer or scanner.
  3. If the printer is not displayed, click The printer you need is not in the list.
  4. Select Add a printer by TCP/IP address and enter the printer IP (you can find it out by printing it out Network report from the printer panel).

For macOS:

  1. Open System Preferences → Printers & Scanners.
  2. Click + and select the tab IP.
  3. Enter the printer's IP address, protocol Line Printer Daemon - LPD and queue lp.

If the printer still doesn't add, check, Is the SMB protocol enabled? (required for network printing in Windows):

  1. Open Control Panel → Programs → Turn Windows features on or off.
  2. Make sure the items are checked Support for SMB 1.0/CIFS file sharing And Printing and document services.
How to find out the IP address of a printer without printing it?

If the printer doesn't print a network report, connect it to the router via an Ethernet cable (if there's a port) and check the list of DHCP clients in the router's web interface. Alternatively, use utilities like Angry IP Scanner to scan the local network.

4. Diagnosing IP address and DHCP conflicts

One of the common reasons why The computer doesn't see the printer via Wi-Fi. — IP address conflict. This occurs if:

  • 🔄 The printer is configured to a static IP that is already taken by another device.
  • 🔌 The router reset the DHCP settings, and the printer did not receive a new address.
  • ⚡ There are multiple DHCP servers running on the network (for example, two routers on the same network).

How to check:

  1. Print it out Network report from the printer (usually in the menu Settings → Reports → Network Configuration).
  2. Compare the printer's IP address with your router's DHCP range (for example, if the router distributes addresses with 192.168.1.100 By 192.168.1.199, and the printer has an address 192.168.1.200 - it's out of range).

Solutions:

Problem Action
Printer IP is out of DHCP range Set up on the printer Obtaining IP automatically (DHCP) or assign a static IP within the range.
IP conflict (address taken) Reboot your router or manually assign a different IP to the printer (for example, 192.168.1.250).
DHCP is disabled on the router Enable DHCP in your router settings (Local Network → DHCP Server).
There is a second DHCP server Turn off the second router or configure it in mode Access point (AP).
⚠️ Attention: If your network uses double NAT (two routers are cascaded), the printer may be unavailable to devices connected to the first router. The solution is to configure the second router in cascade mode. bridge or disable DHCP on it.

5. Updating drivers and firmware

Outdated printer drivers or firmware may cause connection issues. How to update:

Drivers for Windows/macOS:

  1. Download the latest drivers from the manufacturer's official website:
  • Remove old drivers via Control Panel → Programs → Uninstall a program.
  • Install new drivers and restart your computer.

    • Printer firmware:

    1. Download the latest firmware for your model from the manufacturer's website.
    2. Connect the printer to your computer via USB (even if it is wireless).
    3. Run the firmware file and follow the instructions (do not turn off the printer during the process!).

    If after the update the printer stops working completely, follow the steps below factory reset:

    1. Press and hold the button Cancel (X) or Reset on the printer panel for 10–15 seconds.
    2. After rebooting, set up the printer again.

    6. Check your firewall and antivirus

    Windows Firewall or third-party antivirus (Kaspersky, ESET NOD32, Avast) may block access to the printer over the network. How to check:

    Disabling Windows Firewall:

    1. Open Control Panel → Windows Firewall → Turn on or off.
    2. Disable your firewall for private networks and check the connection to the printer.
    3. If the printer works, add an exception for the ports 9100 (RAW), 515 (LPD) and 631 (IPP).

      4. Setting up antivirus:

      • 🛡️ In Kaspersky: open Settings → Advanced → Network → Do not monitor network activity for the printer.
      • 🛡️ In ESET: go to Network → Firewall Rules and add an allow rule for the printer IP.
      • 🛡️ In Avast: disable the module Network protection for 10 minutes for the test.

      Critical Information: Antivirus Dr.Web Version 12.5+ blocks the LPD protocol by default. To make the printer work, you need to manually add an exception for the process. spoolsv.exe in the security settings.

      7. Alternative connection methods

      If a standard Wi-Fi connection doesn't work, try these alternative methods:

      1. Connection via WPS (Wi-Fi Protected Setup):

      • 🔄 Click the button WPS on the router (usually it is signed or marked with an icon 🔄).
      • 🖨️ Press the button within 2 minutes WPS on the printer (or select WPS in the network menu).

    2. Connecting via USB and then switching to Wi-Fi:

    1. Connect the printer to your computer via USB.
    2. Install drivers (if required).
    3. In the printer program (for example, HP Smart) select Convert to wireless printer.

    3. Using cloud printing:

    • 🌐 Google Cloud Print (for older printers).
    • 🌐 HP ePrint or Epson Connect (requires registration on the manufacturer's website).
    • 🌐 Apple AirPrint (for Apple devices).

    4. Connecting via Ethernet (if there is a port):

    If your printer supports a wired connection, connect it to the router with a cable. Then add the printer to your computer using its IP address (see Section 3).

    8. Diagnosing hardware problems

    If none of the methods helped, the problem might be hardware. Check:

    1. Printer Wi-Fi module:

    • 🔍 On some models (Brother DCP-T720DW, Canon MG3640SThe Wi-Fi module may be coming loose from the board. Try gently pressing the printer body down on the antenna area.
    • 🔧 If the printer has been dropped or subjected to vibration, the module may be damaged. In this case, repair is required.

    2. Interference from other devices:

    • 📡 Switch your router to a different Wi-Fi channel (for example, from 6 on 11) in the settings Wireless Network → Channel.
    • 📱 Make sure there are no devices operating on the 2.4 GHz frequency nearby (cordless phones, microwaves, baby monitors).

    3. Router malfunction:

    • 🔄 Connect the printer to another router (for example, from your phone in access point mode).
    • 📶 If the printer works, the problem is with the main router. Try updating its firmware or resetting its settings.
    ⚠️ Attention: Printers Samsung series SL-M2020 And SL-M2070 There's a known issue with the Wi-Fi module, which stops working after 2-3 years of use. The official solution is to have the module replaced at a service center.

    FAQ: Frequently Asked Questions

    The printer is connected to Wi-Fi, but the computer can't see it. What should I do?

    1. Make sure your computer and printer are in one subnet (for example, both have IP of the type 192.168.1.x).

    2. Disable your firewall and antivirus for 5 minutes.

    3. Add the printer manually by IP address (see section 3).

    4. Restart the print service: enter in the command line net stop spooler && net start spooler.

    The printer sees the network, but doesn't connect—it says "Authentication Error."

    1. Make sure you enter correct password (case important!).

    2. Check the router encryption type: the printer may not support it WPA3 (switch to WPA2).

    3. Reset the Wi-Fi settings on the printer and reconnect.

    4. If used hidden SSID, make the network visible temporarily.

    After a Windows update, my printer disappeared from the list. How do I get it back?

    1. Remove the printer via Settings → Devices → Printers & Scanners.

    2. Download the latest driver version from the manufacturer's website.

    3. Restart your computer and add the printer again.

    4. If it doesn't help, roll back the Windows update (in Settings → Update & Security → Update History).

    Is it possible to connect a printer to Wi-Fi without a router (directly to a computer)?

    Yes, but with restrictions:

    1. Wi-Fi Direct: many printers (HP Envy, Canon Selphy) support direct mode. Activate it in the printer menu and connect as you would to a regular Wi-Fi network.

    2. Access point mode on PC: Share Wi-Fi from your computer and connect the printer to this network.

    3. Ad-hoc network (outdated method, works only on Windows 7/8).

    Disadvantage: in this mode, the computer will not have access to the Internet.

    My printer connects to Wi-Fi, but prints slowly or with errors. What's wrong?

    1. Check signal quality: If the level is below 30%, move the printer closer to the router.

    2. Switch the router on 5 GHz (if the printer supports this range).

    3. Turn off energy savings for Wi-Fi adapter in Device Manager.

    4. If broken characters are printed, update the drivers or try a different USB cable (for initial setup).

    📖 Read also

    Canon LBP 7100: How to connect a WiFi router step by step Detailed instructions on how to set up WiFi on a Canon LBP 7100 printer. Troubleshooting connection issues, How to Print from iPhone to Samsung via Wi-Fi: Complete Setup Step-by-step instructions on how to set up wireless printing from an iPhone to a Samsung printer. Troubleshooting How to Set Up the HP Laser MFP 135w on Wi-Fi: A Complete Guide Step-by-step guide to connecting the HP Laser 135w MFP to a wireless network. Setup via WPS and USB. How to connect a printer to a Wi-Fi router: step-by-step instructions A detailed guide to setting up wireless printing. Learn how to connect your printer to a Wi-Fi router. Epson M105: How to Connect to a WiFi Router in 5 Steps Detailed instructions on how to connect the Epson M105 printer to a WiFi network. Setup via WPS and the router menu. Pantum P2500: How to Connect via Wi-Fi – Full Instructions A detailed guide on setting up the Pantum P2500 wireless printer via Wi-Fi Direct and a router.