My brother laser printer 2170w is saying it's offline and I have no idea how to get it back online

The obvious cause of brother printer saying its offline is because it is not set as the default printer on your computer. You can easily change the status of Brother MFC 5890 CN printer offline to online. Under the devices section in your computer check, if it is listed as devices. You must re install the driver from the website. In case, you need to use the Brother Printer offline. Right click on the icon of Brother Printer machine. Then, see what's printing and change it to offline.
https://connectmyprinter.com/how-to-fix-brother-printer-offline-error/

I am having the same issue. The printer works for a few days, and then the IP address for the printer changes and I cannot print anymore. Any idea as to how to solve that issue?

The printer is connected to the rest of your computer with connecting hardware. If the connecting hardware such as connecting cords or connecting pins are damaged or not secure, then printer would be offline. Users facing the printer offline issue are recommended to check the connecting hardware and if the connecting hardware is found damaged, they would have to be repaired to solve the issues.

Click Start > Go to Control Panel > Printers and faxes or Printers > Right click on the Printer > Select "Use Printer Online"

Hi,

Please check that, can you go online with any wireless computer,if you can go online with that, then try to reconnect your wireless printer again (if can't go online then check wireless router)


Hope it can resolve your query
Thanks for using Fixya

Go to the computer Control Panel, select Printers, right mouse click on the printer and choose Use Printer Online. See what happens.

Have you tried the SecureEasySetup method of connecting your HL-2170W to your wireless network?

Basically, it involves no wires:

1) Press the wireless setup button on the back of your printer (you may need to use a pen or pointed object)

2) Press the SecureEasySetup button on your router

3) Let the two sort it out - Green Go button on printer indicates success.

A complete guide for using the SecureEasySetup for your brother model:

Brother SecureEasySetup Method

I hope this helps!

http://www.metacafe.com/watch/1913451/low_toner_on_a_laser_printer_laser_printer_hack_how_many_pages/

Do the install with the network cable, DELETE the printer but not the contol files, do a manual install. The Brother software is screwy. Read the tech manual.
http://www.brother-usa.com/ModelDocuments/Consumer/Network%20Users%20Manual/NUM_HL_2170W_EN_1292.PDF

I had the same issue and searched ALL over the net for a solution and was thinking about returning the printer until I found this. It works, ALL of my computers are up and running with no issues at all. Just follow these instructions and you should be up and running in no time.

http://welcome.solutions.brother.com/bsc/public_s/id/pdf_pub/faq/faq002519/wireless_wcable_hl2170w.pdf