MFC-7420
FAQs & Troubleshooting |

MFC-7420
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Popular
Updated:22/07/2026
These are the most viewed FAQs, ranked by popularity.
- 1.The error message "Invalid format for short nick name" appears when printing a document. (Mac OS X 10.5 or greater)
- 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". What should I do?
- 3.When I start the Remote Setup Software, the error message "RS 005-xx" or "RS 006-xx" appears on the display.
- 4.Load envelopes, labels, or thick paper into the manual feed slot.
- 5.I cannot use the Scan to E-mail with Outlook2003 or Outlook2007 after updating ControlCenter3. The error message "command line argument is invalid" appears. What can I do?
Latest
These are the latest FAQs, sorted by last update date.
01/06/2026
How to identify your Operating System (OS).
05/02/2026
I cannot find a file downloaded from the Brother support website (For Windows)
30/07/2025
I'm using Voice Over Internet Protocol (VoIP) and am having problems receiving faxes.
16/04/2025
I cannot print from my computer via USB.
19/06/2024
I cannot install the fax driver (brmfcfaxdrv) in Fedora 40 or later, or in its derivatives. (Linux)