MFC-J3940DW
FAQs & Troubleshooting |

MFC-J3940DW
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Popular
Updated:07/17/2026
These are the most viewed FAQs, ranked by popularity.
- 1.The printer status is Offline or Paused.
- 2.What is the default password for my Brother machine?
- 3.Paper Tray not detected / Paper Tray 1/2/3 not detected / Paper Tray #1/2/3 not detected
- 4.I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
- 5.Install the Brother Mobile Connect application (for mobile device)
Latest
These are the latest FAQs, sorted by last update date.
06/17/2026
Configuration changes required to install Brother drivers (Windows11)
06/16/2026
I get an error when installing a Brother printer driver (Windows 11)
06/16/2026
I cannot use some Brother apps or functions. (Windows 11)
06/01/2026
How to identify your Operating System (OS).
05/08/2026
Uninstall the Brother Software and Drivers (Windows)
