MFC-L3780CDW
FAQs & Troubleshooting |

MFC-L3780CDW
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Popular
Updated:03/17/2026
These are the most viewed FAQs, ranked by popularity.
- 1.What is the default password for my Brother machine?
- 2.I updated my Windows 11 PC through Windows Update and I can no longer Print, Scan or Fax from my PC.
- 3.No Paper / No Paper Tray1/Tray2/MP Tray
- 4.I get the “Authentication Error” or “Receiving Error” message when using Microsoft Exchange Online.
- 5.I still receive the error message "Replace Drum", "Drum End Soon" or "Drum Stop" after I replace the drum unit with a new one.
Latest
These are the latest FAQs, sorted by last update date.
03/09/2026
I cannot install the printer driver or print in Windows 11.
02/05/2026
I cannot find a file downloaded from the Brother support website (For Windows)
01/23/2026
Use Universal Print (Mac)
01/20/2026
Where can I download Brother iPrint&Scan application for Mac?
01/19/2026
I cannot scan via network.
