If you want to Fix brother printer shows offline you can follow the step given below:
1. Firstly, go to the ‘Control panel’ by using Windows search option.
2. Once ‘Control Panel’ opens, click on ‘Devices and Printers’. Next printer list will appear in the display.
3. Right click on your Brother printer from the list of shown printers and select the option of ‘Set as Default Printer’.
4. Now restart your printer to check if your offline problem is resolved or not.
Hopefully above steps will help you to fix the issue if not you can also follow our blog to see more on windows 10 printer offline brother.