Why Your Printer Shows Offline Every Time the Computer Wakes Up

By Printer Solved Team

You open a document, press print, and the computer insists the printer is offline, even though the printer is sitting right there with its light on. After a restart it works again, and then the same thing happens the next morning. If you are dealing with a Canon printer keeps going offline problem, the cause is usually a small mismatch between how the computer sleeps and how the printer is connected, not a broken printer.

What "offline" really means

The word sounds like the printer has switched itself off, but it only describes what the computer believes. Your computer asks the printer a simple question every so often: are you there? If the printer is slow to answer, because it was in a deep power-saving state or because the network connection dropped while the computer slept, the computer marks it as offline and stops sending jobs. The printer may be perfectly healthy the whole time.

Start with the quick resets

• Turn the printer off with its own power button, wait ten seconds, and turn it on again.
• On the computer, open the printer queue and look for a setting such as "use printer offline". Make sure it is not ticked.
• Cancel any old jobs sitting in the queue, since a single stuck job can make the status look wrong.
• Print one test page and see whether the status returns to ready.

Check how the printer is connected

Most of these problems are on the Wi-Fi side. A printer that joined the network with an automatic address can be given a different address after the router restarts or the lease runs out. The computer still remembers the old address and keeps knocking on a door where the printer no longer lives. If your router lets you reserve an address for a device, reserving one for the printer removes this problem for good. If that sounds like too much, remove the printer from the computer and add it again, which makes the computer look for its current address.

Look at the sleep settings

Some printers drop off the network after a long idle period to save power. Check whether the printer has an auto power-off or deep sleep option and extend the time, or switch the option off if you print daily. On the computer, try a lower sleep delay while you test, because it will show you quickly whether sleep is the trigger.

Keep the signal strong

A printer placed far from the router, behind a wall, or next to a microwave will lose its connection more often. Moving it closer, even by a few metres, can make a surprising difference. If you have a dual-band router, make sure the printer and the computer are both on a band that the printer supports, which is usually the 2.4 GHz one.

When to reinstall the driver

If everything above is in order and the status still flips to offline, remove the printer entry and the driver software from the computer, restart, and set the printer up again from scratch. A damaged driver can misreport the status even when the connection is fine.

A short routine that helps

Once it works, make a small habit of printing something on the first day of each week. Regular use keeps the connection active and shows you early when something changes.

For more plain-language printer help, visit Printer Solved.