MFC-7420
FAQs & Troubleshooting |

MFC-7420
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Popular
Updated:19/06/2026
These are the most viewed FAQs, ranked by popularity.
- 1.The error message "No Supported Devices Found" appears in Brother iPrint&Scan (mobile device).
- 2.I'm using Windows. When I try to Scan to E-mail I get an error saying "the command line argument is not valid. Verify the switch you are using".
- 3.When I click on any button in Control Center 2.0 the program crashes or freezes using Mac OS X.
- 4.How do I clean white or black spots on printed documents?
- 5.When I try to scan to OCR I get the message "This feature is not available because there is no OCR Software installed"
Latest
These are the latest FAQs, sorted by last update date.
10/06/2026
How to identify your Operating System (OS).
13/05/2026
Check the IP addresses of your PC and the Brother machine
30/04/2026
Uninstall the drivers (Windows)
12/02/2026
I cannot find a file downloaded from the Brother support website (For Windows)
22/08/2025
I'm using Voice Over Internet Protocol (VoIP) and am having problems receiving faxes.