MFC-L3720CDW
FAQs & Troubleshooting
When I run the Firmware update tool or the I-FAX install tool, the "Program failed to run" message appears on my PC screen.
If a personal firewall software (or anti-virus software) is installed on your PC, temporarily disable it. For instructions on how to disable this type of program, please refer to the user's guide for your software or contact the software manufacture.
If your question was not answered, have you checked other FAQs?
Have you checked the manuals?
If you need further assistance, please contact Brother customer service:
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Error Messages Paper Feed / Paper Jam Print Scan Copy Telephone Fax Mobile Others Advanced Functions (for Administrators) Linux Product Setup Driver / Software Network Settings Consumables / Paper / Accessories Cleaning Specification OS Support Information Video FAQs
Settings/Management Security Enhancement Printer Scanner / Scan Key Tool PC-FAX / Fax-modem Error Message on Machine's Display Error Message on Status Monitor Error Message on Computer Paper Jam Paper Loading / Handling Cannot Print (via Network) Cannot Print (via USB / Parallel) Cannot Print (via Mobile Device) Print Quality Problem General Print Problem Print from Computer (Macintosh) Print from Mobile Device Print Settings / Management Tips for Printing Cannot Scan (via Network) Cannot Scan (via USB / Parallel) General Scan Problem Scan from Mobile Device Scan Settings / Management Copy Quality Problem Telephone Problem Telephone Operation Advanced Networking Wireless Network Setting Problem Wireless Network Settings Tips for Network Settings Cannot Send a Fax Cannot Receive a Fax Fax Quality Problem Fax Sending Operation from Computer (PC-Fax) Fax Receiving Operation with Computer (PC-Fax) Fax Settings / Management iOS Device-related Problem Brother iPrint&Scan / Mobile Connect (iOS) AirPrint (iOS) Android™ Device-related Problem Brother iPrint&Scan / Mobile Connect (Android™) Machine problem Machine Setup / Settings Paper Handling Video FAQs Installing Drivers / Software Updating Drivers / Software / Firmware Uninstalling Drivers / Software Driver / Software Settings Driver / Software tips Consumables Paper Cleaning Product Specification Paper Specification Windows Support Setup Video Troubleshooting Video
