Another reason for your printer not being online is the use printer offline feature in microsoft windows 10.
Brother printer connected to wifi but offline.
You can change the printer s network settings using the printer setting tool see the faq.
Make sure you are using the correct printer driver for the brother machine.
Try connecting it directly to the computer and not via a hub.
Using the printer setting tool the printer setting tool also allows you to easily apply the network settings changes to multiple printers.
It has an ip address and i can access its web interface from my pc.
If using an ethernet cable make sure the cable is connected to both the printer and router access point.
Print offline in windows.
Your printer s built in menu should show which network it s connected to or check your printer s manual for more info.
Select start settings devices printers scanners.
Select your brother machine in the printers section.
I have a printer that is connected to my home wifi network.
If using a usb cable make sure the cable is connected to both the printer and computer.
Select the apple menu system preferences print scan or printers scanners.
If the dynamic ip address was the issue this should definitely provide a solution allowing you to use your brother printer again.
Sometimes i can print just fine from my windows pc but other times it reports the printer is offline even when i know it is online.
Make sure the printer is connected to the computer.
If you press the wi fi button for five seconds or more the printer will enter the wps mode and any connection using wireless direct will fail.