There are many reasons behind the brother printer offline issue. Some are common and some others are critical. you can easily get your printer back online with the below-mentioned steps.
You can go through following troubleshooting steps:
• Check the connectivity with WiFi
• Ensure that your printer is not in sleep mode.
• Paper-jam is also the major issue, that pauses your printer.
• Low-ink and no papers in printing tray.
• Ensure that not given so many commands at one time.
I hope now your brother printer is offline. If still, your brother's printer is showing offline then you can easily connect with Us.