Dear @Richard Mayen,
Thank you for posting your question in the Microsoft Q&A forum.
Based on your description, your HP computer suddenly cannot connect to your Brother printer over the network. This is usually caused by Wi-Fi misconfiguration, driver issues, or IP conflicts. For better understanding your situation, could you please provide us more detail information as:
- Does it appear any notification on your HP computer when it cannot connect to Brother printer?
Here are some suggestions you can try:
Confirm Network & Device Status
- Make sure both the HP computer and Brother printer are on the same Wi-Fi network (same SSID and password).
- Check the printer’s display for error messages (e.g., Paper Jam, Toner Empty). Clear any errors before proceeding
Restart Devices
- Power off the printer and computer, wait 30 seconds, then restart both.
- If you changed your router password recently, re-enter it on the printer.
Run Windows Printer Troubleshooter
- On your HP computer: Settings > System > Troubleshoot > Other troubleshooters > Printer > Run
- This can auto-fix common connectivity issues
Verify Printer Settings
- In Control Panel > Devices and Printers, ensure your Brother printer is set as default.
- Clear any stuck print jobs: Right-click printer > See what’s printing > Cancel All Documents.
Check IP Address & Add TCP/IP Port
- Print a Network Configuration Report from the printer.
- Confirm the IP address is valid (e.g., 192.168.x.x).
- If valid, add a TCP/IP port: Printer Properties > Ports > Add Port > Standard TCP/IP Port > Enter printer IP.
Update or Reinstall Printer Driver
- Uninstall the old driver via Device Manager, restart, then reinstall.
Reset Printer Network Settings
- On the printer: Menu > Network > Reset Network.
- Reconnect using WPS button or manually enter Wi-Fi credentials
Check Firewall/Antivirus
- Ensure your firewall or antivirus isn’t blocking printer communication. Temporarily disable and test.
Kindly noted: If printing works via USB cable but not Wi-Fi, the issue is network-related (router settings, IP conflict, or wireless protocol)
I hope information above helpful, if you have any other questions, please feel free to reach out.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.