If other HP devices are used on the computer, do not remove their drivers or software. Remove only components related to HP LaserJet Pro MFP M125-M126.<\/div>\n
After removal, restart the computer<\/strong>.<\/p>\n2. Additional check in Windows 11<\/h2>\n
If the HP driver does not install in Windows 11 or the HP driver disappeared after a Windows update, check Windows protected print mode<\/strong>.<\/p>\nOpen:<\/p>\n
Settings \u2192 Bluetooth & devices \u2192 Printers & scanners<\/strong><\/p>\nIf Windows protected print mode<\/strong> is enabled, turn it off before installing the traditional HP driver.<\/p>\nAfter changing the setting, restart the computer.<\/p>\n
If this option is not available or the mode is already disabled, you do not need to change anything. In Windows 10, you can skip this section.<\/p>\n
3. Run the HP installation package<\/h2>\n
Run the file:<\/p>\n
LJPro_MFP_M125-126_full_solution_15311.exe<\/pre>\nIf Windows displays a User Account Control prompt, allow the program to run.<\/p>\n
Accept the license agreement and wait until the installer proceeds to the component selection stage.<\/p>\n
4. Keep only the required software<\/h2>\n
For MFP operation, leave the following selected:<\/p>\n
\n- HP LaserJet Pro MFP M125-M126 Scan Driver<\/strong> \u2014 required;<\/li>\n
- HP LaserJet Pro MFP M125-M126 PCLmS<\/strong> \u2014 required;<\/li>\n
- HP Scan<\/strong> \u2014 leave selected.<\/li>\n<\/ul>\n
If the installer allows you to clear the check boxes, you can choose not to install:<\/p>\n
\n- HP Update<\/strong>;<\/li>\n
- HP Printer Status and Alerts<\/strong>;<\/li>\n
- HP Device Toolbox<\/strong>;<\/li>\n
- other optional components.<\/li>\n<\/ul>\n
It is recommended to install HP Scan.<\/strong> This program is usually sufficient for basic scanning of documents and photos.<\/div>\nClick Next<\/strong> and wait for the installer to prepare.<\/p>\n5. Select the connection method<\/h2>\n
The installer offers several options. Select the one that will actually be used by the MFP.<\/p>\n
If you need a USB connection<\/h3>\n
Select:<\/p>\n
Directly connect to this computer using a USB cable<\/strong><\/p>\nDo not connect the USB cable in advance. At the next stage, the installer will prompt you to connect the device.<\/p>\n
After the prompt appears:<\/p>\n
\n- turn on the MFP;<\/li>\n
- connect the USB cable directly to the computer;<\/li>\n
- wait for the device to be detected and the installation to complete.<\/li>\n<\/ol>\n
When troubleshooting USB problems, do not use a hub or docking station. Connect the MFP directly to a USB port on the computer.<\/div>\n
If the MFP is already connected to a home or office network<\/h3>\n
Select:<\/p>\n
Connect through a network<\/strong><\/p>\nThe installer offers several ways to detect the device. First use:<\/p>\n
Automatically find my product on the network<\/strong><\/p>\nThe computer and MFP must be on the same local network.<\/p>\n
If automatic detection does not find the device, select Search by IP address<\/strong> and enter the MFP’s IP address.<\/p>\nSearching by host name or hardware address can be used as additional options, but on a typical home network it is usually easier to find the device automatically or by IP address.<\/p>\n
If Wi-Fi has not yet been configured on the MFP<\/h3>\n
Select:<\/p>\n
Help me set up a first-time wireless connection<\/strong><\/p>\nThe installer will offer to retrieve the wireless network settings from the computer or let you enter them manually.<\/p>\n
If the computer is already connected to the Wi-Fi network that the MFP should use, you can first select:<\/p>\n
Yes, retrieve the wireless settings from my computer<\/strong><\/p>\nThen continue the setup by following the program’s instructions.<\/p>\n
If automatic retrieval of the settings does not work, go back and select:<\/p>\n
No, I will enter the wireless settings manually<\/strong><\/p>\nFor manual setup, you will need to enter the wireless network name and password correctly.<\/p>\n
6. The installer cannot find the MFP on the network<\/h2>\n
If the device is turned on and connected to the network but automatic detection does not find it, do not reinstall the driver immediately.<\/p>\n
First check the following:<\/p>\n
\n- Make sure the MFP is turned on and ready for use.<\/li>\n
- Check that the computer is connected to the same home or office network.<\/li>\n
- Do not use a guest Wi-Fi network if it isolates connected devices from one another.<\/li>\n
- Restart the MFP and router.<\/li>\n
- Run the installer again and select Connect through a network<\/strong>.<\/li>\n
- If automatic detection does not work, use Search by IP address<\/strong>.<\/li>\n<\/ol>\n
If the device can be found by IP address but is not detected automatically, you can usually continue the installation using the detected address.<\/p>\n
7. The printer stopped working after replacing the router or changing the Wi-Fi password<\/h2>\n
If the MFP previously printed and scanned over Wi-Fi but stopped being detected after the router, network name, or password was changed, the wireless connection settings stored in the MFP no longer match the new network.<\/p>\n
In this case:<\/p>\n
\n- run the HP installation package;<\/li>\n
- go to connection setup;<\/li>\n
- select Help me set up a first-time wireless connection<\/strong>;<\/li>\n
- transfer the new network settings from the computer or enter them manually;<\/li>\n
- after the connection is established, reinstall or add the MFP on the computer.<\/li>\n<\/ol>\n
8. The Wi-Fi network cannot be found or the connection fails<\/h2>\n
If the MFP cannot connect to the wireless network, check the router settings.<\/p>\n
These models use an 802.11b\/g\/n wireless network. If you are using a modern dual-band router, make sure the 2.4 GHz network is enabled.<\/p>\n
Also check:<\/p>\n
\n- whether the Wi-Fi password was entered correctly;<\/li>\n
- whether the network name has changed;<\/li>\n
- whether the MFP is too far from the router;<\/li>\n
- whether a guest network with device isolation is being used.<\/li>\n<\/ul>\n
For the initial setup, it is advisable to temporarily place the MFP closer to the router.<\/p>\n
9. The printer prints over the network, but HP Scan cannot find the scanner<\/h2>\n
Users of this series may encounter a situation where network printing works, but HP Scan displays a message that the HP LaserJet M125-M126 scanner cannot be found.<\/p>\n
First, do the following:<\/p>\n
\n- Make sure the computer and MFP are on the same network.<\/li>\n
- Restart the MFP and computer.<\/li>\n
- Run HP Scan again.<\/li>\n
- If a third-party firewall or antivirus is used, check whether it is blocking HP network components.<\/li>\n<\/ol>\n
If the problem appeared after an incomplete or old driver installation, perform a clean reinstallation of the full HP package and select Connect through a network<\/strong>, not USB, as the connection type.<\/p>\nIf the printer was originally installed as a USB device and then simply connected to Wi-Fi, printing may sometimes work through an automatically created Windows queue, but HP Scan may not receive the correct network configuration. In this situation, it is recommended to reinstall the full HP package and select the network connection.<\/div>\n
10. Check the Windows scanning service<\/h2>\n
If HP Scan does not detect the scanner even after a correct network installation, check the WIA service.<\/p>\n
\n- Press Win + R<\/strong>.<\/li>\n
- Enter:<\/li>\n<\/ol>\n
services.msc<\/pre>\n\n- Press Enter<\/strong>.<\/li>\n
- Find Windows Image Acquisition (WIA)<\/strong>.<\/li>\n
- Make sure the service is running.<\/li>\n<\/ol>\n
After that, run HP Scan again.<\/p>\n
11. The installation ends with an error or does not detect the device via USB<\/h2>\n
If the problem occurs specifically during USB installation:<\/p>\n
\n- disconnect the USB cable;<\/li>\n
- remove the previous HP LaserJet Pro MFP M125-M126 installation;<\/li>\n
- restart the computer;<\/li>\n
- run the full installation package again;<\/li>\n
- select the USB connection;<\/li>\n
- connect the cable only after the program prompts you to do so.<\/li>\n<\/ol>\n
If the device is still not detected, try another USB port and another working USB cable.<\/p>\n