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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
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×InformationNeed Windows 11 help?Check documents on compatibility, FAQs, upgrade information and available fixes.
Windows 11 Support Center. -
- HP Community
- Printers
- Scanning, Faxing, and Copying
- FAX not possible any more...

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07-02-2025 12:24 PM
Hi @sascha48,
Welcome to the HP Support Community.
Thank you for posting your query. I will be glad to help you.
If your HP DeskJet 4120e All-in-One Printer is no longer able to send or receive faxes on Windows 11, here are some steps and resources to help you troubleshoot:
Basic Fax Troubleshooting Steps:
- Check Phone Line Connection:
- Ensure the phone line is connected directly to the printer’s LINE port.
- Avoid using splitters or VOIP lines if possible.
- Run Fax Test from Printer:
- On the printer control panel, go to Setup > Fax Setup > Run Fax Test.
- Review the report for any failed tests and follow the suggested fixes.
- Send a Test Fax:
- Use HP’s free Fax Test Service by sending a fax to 1-888-HPFaxme (1-888-473-2963).
- If successful, you’ll receive a return fax within 5–7 minutes.
- Adjust Fax Settings:
- Lower the fax speed (Standard or Slow).
- Enable Error Correction Mode (ECM).
- Try sending in black and white instead of color.
- Check for Interference:
- Remove other devices (modems, answering machines) from the line.
- Use the original two-wire phone cord that came with the printer.
For additional help, please use the link: HP printers and fax machines - Resolve fax problems | HP® Support
I hope this helps.
Take care and have a good day.
Please click “Accepted Solution” if you feel my post solved your issue, as it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!
VikramTheGreat
HP Support