OKI Printer Offline? How to Bring It Back Online

OKI printers have a reputation for running for years in offices, warehouses, and front desks, so when one suddenly shows "Offline," the printer itself is rarely broken. Something between the printer and your computer has stopped talking. Maybe the printer went to sleep, maybe it picked up a new IP address overnight, or maybe Windows is holding on to an old setting.

The good news is that OKI printers leave plenty of clues. The operator panel tells you whether the printer is really online, and the printer's built-in web page tells you whether your computer can reach it. This guide starts with those checks, then moves through the fixes for Windows 11, Windows 10, and macOS, from quickest to most involved.

A quick note: Printer Tales is an independent troubleshooting resource and isn't affiliated with OKI. OKI stopped selling printers in the US, Canada, and Latin America in 2021, but it still posts drivers, manuals, and support answers for existing models on oki.com.

Why Your OKI Printer Shows Offline

"Offline" is a catch-all message. On an OKI, it usually comes down to one of these.

At the printer

• The printer itself is offline. Most OKI LED printers have an ON LINE button. If someone presses it, or the printer is left in a menu, it stops accepting jobs until you press ON LINE again. On MICROLINE dot matrix printers, the SEL button does the same thing.
• It's in Sleep or Deep Sleep mode. OKI printers drop into Power Save quickly, then into Sleep, where power use is close to being switched off. A print job normally wakes the printer, but not always, especially over a WSD connection (more on that below).
• It turned itself off. Many OKI models have an Auto Power Off timer that shuts the printer down after a few hours without use. On some models it only applies when no network cable is plugged in, which is why USB-connected OKI printers are the ones that seem to "vanish" in the afternoon.
• An error is holding it up. A jam, an open cover, an empty tray, or a toner or drum message will stop printing, and Windows may report that as offline.

On the network

• The printer's IP address changed. OKI printers are set to get an IP address automatically by default. After a power outage or a router restart, the router can hand out a different address, and your computer keeps sending jobs to the old one.
• The printer couldn't get an address at all. Some OKI models show "Getting target IP failed. Please check DHCP settings." when this happens.
• The router or internet service changed. A new router, a new Wi-Fi password, or a switch to a new internet provider cuts the printer off until it's connected again.
• Wired and wireless are both on the same network. Some OKI models can use Ethernet and Wi-Fi at the same time. OKI notes that when both sit on the same subnet, the connection can become unstable.

On your computer

• "Use Printer Offline" or "Pause Printing" is switched on in Windows.
• The print queue is jammed, or the Print Spooler service has stalled.
• Windows is using a WSD port. OKI's own support team warns that printing may fail over a WSD port while the printer is asleep, and recommends a Standard TCP/IP port instead.
• The USB port number doesn't match. Plug an OKI into a different USB socket, and Windows can create a new port while the printer stays pointed at the old one.
• The Windows status check fails. Windows asks network printers how they're doing using a protocol called SNMP. When that check doesn't get the answer it expects, Windows can show the printer as offline even though it would print fine.

Before You Change Anything, Check the OKI Itself

These three checks take a couple of minutes, and they'll tell you whether to fix the printer, the network, or your computer.

1. Look at the display and the buttons

• The display is blank but the power light is on: the printer is probably asleep. If the POWER SAVE button is blinking, press it to wake the printer. On many OKI models, a solid green POWER SAVE light means Power Save mode and a blinking one means Sleep.
• The display doesn't say "Ready To Print" (or "ONLINE"): press the ON LINE button once. OKI lists this as the first fix when the printer itself is offline.
• An error message is showing: deal with that first. Clear the jam, close the cover, or replace the supply the message names. On models with a HELP button, press it for step-by-step instructions on the screen.
• MICROLINE dot matrix printers: check the SEL light. Lit means the printer is selected and ready. Off means it's deselected and won't take data, so press SEL. Flashing means it's in Print Suppress mode.
• The printer is completely off and you didn't turn it off: Auto Power Off probably kicked in. Turn it on, and see "If Your OKI Keeps Going Offline" below to stop it happening again.

2. Find the printer's IP address

Skip this step if your OKI is connected by USB.

The menu names vary by model. Here are the paths OKI gives for some of its most common printers:

• C332 and similar models: press the up or down arrow, select NETWORK, press OK, then open NETWORK INFO (or WIRELESS(INFRASTRUCTURE) INFO if it's on Wi-Fi). Scroll to IPV4 ADDRESS.
• MC363, MC563, and similar MFPs: press the SETTING button, or go to View Information > Network, then open Network Information for a wired connection or Wireless(Infrastructure) Information for Wi-Fi. Look for IPv4 Address.
• C824, C834, C844: go to Functions > Print Information > Network to print a network information page.
• Older models like the B411: press ON LINE to take the printer offline, then hold ON LINE for 10 seconds or more. Two pages of network information print out. Press ON LINE again afterward to bring the printer back online.

Write the address down. You'll need it more than once.

3. Open the printer's web page from the computer that says "offline"

Type the IP address into your web browser's address bar, like this: http://192.168.1.45/

Type it exactly as the printer shows it. OKI points out that adding extra zeros (192.168.001.045) can stop the page from loading.

• The OKI web page opens: your computer can reach the printer, so the network is fine. The problem is a setting on your computer. On Windows, start with Basic Solution 2. On a Mac, go to the Mac section.
• The page doesn't open: your computer can't reach the printer. Start with Basic Solution 1, then check that the printer and computer are on the same network. If the printer is on Wi-Fi, our guide to an OKI printer not connecting to Wi-Fi will help you reconnect it.

While the web page is open, it's worth noting the printer's Short Device Name. Go to View Information > Network and look under General Information. It looks something like MC563-XXXXXX, and Advanced Solution 3 uses it.

Basic Solutions: Get Your OKI Printer Back Online in Windows

Try these in order and send a test print after each one. When it prints, you're done.

Solution 1: Restart everything in the right order

1. Turn the OKI off with its power switch, unplug it, and wait 30 seconds.
2. If the printer is on a network, restart your router and wait until your internet is working again.
3. Plug the printer back in and turn it on. Let it finish warming up until it shows it's ready.
4. Restart your computer, then try printing.

OKI also recommends connecting the network cable before you turn the printer on. A printer that powers up without a cable attached may not set up its network connection properly.

Solution 2: Turn off "Use Printer Offline" and "Pause Printing"

If one of these is switched on, Windows keeps the printer offline no matter what the printer is doing. It's also the first setting OKI's support team tells people to check.

1. Open Control Panel and click View devices and printers under Hardware and Sound.
2. Right-click your OKI printer and choose See what's printing.
3. Click the Printer menu at the top. If Use Printer Offline or Pause Printing has a check mark next to it, click it to remove the check.

If you see several OKI icons, such as one for PCL6 and one for PS, check each one.

Solution 3: Clear stuck jobs and restart the Print Spooler

A job that won't print or cancel can block everything behind it, and Windows may show that as offline.

1. Go to Settings > Bluetooth & devices > Printers & scanners and click your OKI printer.
2. Click Open print queue, then the three-dot menu, and choose Cancel all.
3. Search for Services from the taskbar and open it.
4. Scroll to Print Spooler, right-click it, and choose Restart.

If jobs keep piling up after this, see our guide to an OKI printer job stuck in the queue.

Solution 4: Make sure you're printing to the right OKI

Windows sometimes sends jobs to a printer you didn't expect, especially after the OKI has been installed more than once.

1. In Settings > Bluetooth & devices > Printers & scanners, turn off Let Windows manage my default printer.
2. Click your OKI printer and choose Set as default.
3. If you see an older copy of the same printer, such as one with "(Copy 1)" in its name, try printing to each. The one that works is the one to keep.

Windows 11 also has a built-in printer troubleshooter in the Get Help app. It's worth a run if you'd like Windows to check the basics for you.

Advanced Solutions: Fix the Connection Between Windows and Your OKI

If the OKI web page opened in the printer check but Windows still says offline, the answer is almost always in the port settings. These fixes need an administrator account on the PC.

Solution 1: Find out which port your OKI is using

1. Go to Settings > Bluetooth & devices > Printers & scanners, click your OKI, and choose Printer properties.
2. Open the Ports tab and look at the port with the check mark. The Description column tells you which fix to use:
   • WSD Port: go to Solution 2.
   • Standard TCP/IP Port: go to Solution 3.
   • OKI LPR Port: go to Solution 4.
   • USB001, USB002, or similar: go to Solution 5.

If the Ports tab is grayed out, the printer is probably shared from a server or managed by your IT team. They'll need to make the change.

Solution 2: Switch from a WSD port to a Standard TCP/IP port

Windows often sets network printers up on a WSD port because it finds them automatically. The trouble is that OKI has confirmed printing may not work over a WSD port while the printer is asleep. If your OKI shows offline mainly after it's been idle, this is very likely the reason.

1. On the Ports tab, click Add Port.
2. Choose Standard TCP/IP Port and click New Port.
3. When the wizard asks for Printer Name or IP Address, type the IP address you found in the printer check. The port name fills in by itself.
4. Click Next, then Finish, then Close.
5. Back on the Ports tab, make sure the new port is checked and click Apply.
6. Go to the General tab and click Print Test Page.

Solution 3: Check that the port points to the printer's current address

A Standard TCP/IP port stops working the moment the printer's IP address changes. OKI's fix is simple: make the two match.

1. On the Ports tab, select the checked port and click Configure Port.
2. Compare what's in Printer Name or IP Address with the address you found in the printer check.
   • If it's an IP address that doesn't match, create a new Standard TCP/IP port with the current address (the steps are in Solution 2).
   • If it shows a name like MC563-XXXXXX instead of an address, compare it with the Short Device Name on the printer's web page. If the names don't match, type in the correct one. If they do match, Windows may be failing to look the name up, so type the IP address instead.
3. Click OK, then Apply, and print a test page.

OKI's method for printers whose address keeps changing

OKI suggests setting the port up with the printer's Short Device Name instead of its IP address, so the connection survives an address change. OKI's own steps also switch off the SNMP status check, which takes care of the false "offline" reports it can cause.

1. Click Add Port, choose Standard TCP/IP Port, and click New Port.
2. In Printer Name or IP Address, type the Short Device Name (for example, MC563-XXXXXX) and click Next.
3. When Additional port information required appears, choose Custom and click Settings.
4. Set Protocol to Raw and Port Number to 9100.
5. Clear the SNMP Status Enabled box, click OK, then Next, and Finish.
6. Make sure the new port is checked on the Ports tab, and click Apply.

Turning off SNMP doesn't affect printing. Windows just won't show live printer status, like low toner warnings, for that port. One catch OKI mentions: the name can't be reached while the printer is in Sleep mode, so pair this with the sleep settings in the "Keeps Going Offline" section.

Solution 4: Update the address in OKI LPR Utility

Some OKI installs use OKI LPR Utility instead of a Windows port. If your port says OKI LPR Port:

1. Open OKI LPR Utility. If Windows says you're not authorized, close it, then right-click it in the Start menu and choose Run as administrator.
2. Select your printer and check the IP address the utility has stored for it.
3. If it doesn't match the printer's current address, type in the new one and click OK.

To stop this happening again, turn on Auto Reconnect, which is covered in the "Keeps Going Offline" section.

Solution 5: Fix a USB-connected OKI

USB printers go offline for different reasons than network printers. OKI's support answers point to these checks:

1. Use the right cable and plug it straight in. OKI doesn't support USB hubs, switches, or extension cables for its printers. Connect the printer directly to the computer, and use a USB 2.0 printer cable. OKI recommends one 2 meters (about 6.5 feet) long or shorter.
2. Match the USB port number. Open Device Manager and expand Universal Serial Bus controllers. Right-click USB Printing Support, choose Properties, open the Details tab, and select Bus Relations. You'll see your OKI model name followed by a port number, like USB002. Then open Printer properties > Ports for your OKI and make sure the matching USB port is checked.
3. If USB Printing Support doesn't appear at all, unplug the cable and plug it back in. If it still doesn't show up, try another USB socket, then another cable.
4. Remove extra drivers. OKI notes that another printer driver set up on the same USB connection can get in the way. Remove any old OKI printer icons you no longer use.

If the printer is also turning itself off after a few hours, that's Auto Power Off. "Adjust Sleep and Auto Power Off" further down shows how to change it.

Solution 6: Remove the OKI and add it back by IP address

If nothing above has worked, a clean start usually does.

1. In Settings > Bluetooth & devices > Printers & scanners, click each copy of your OKI printer and choose Remove.
2. Restart your computer.
3. Go back to Printers & scanners and click Add device. When Add manually appears, click it and choose Add a printer using an IP address or hostname.
4. Set Device type to TCP/IP Device, enter the printer's IP address, and follow the prompts.

A note about drivers: since mid-2026, Windows 11 has leaned toward its own Microsoft IPP Class Driver for printers that support it. If your OKI shows up as "OKI LTD" followed by the model name, that's what happened. It prints, but you lose OKI's tray, finishing, and color settings. For the full set of options, install the driver for your model from oki.com. Our OKI printer driver guide explains which driver to pick and how to swap the OKI LTD icon over to it.

If the printer went offline right after a Windows update, our guide to an OKI printer issue after a Windows update covers that situation step by step.

How to Fix an OKI Printer Offline on a Mac

A Mac usually shows an offline OKI as paused, or as "not connected." Work through these steps in order.

1. Resume the printer. Click the printer icon in the Dock to open its queue. If you see Resume, click it. Delete any job marked with an error. Apple notes that a printer can pause itself after a connection problem.
2. Test the connection. Make sure your Mac is on the same Wi-Fi or network as the OKI, then type the printer's IP address into Safari. If the OKI web page opens, your Mac can reach the printer.
3. Delete the printer and add it back. This is OKI's own fix for a Mac that can't print over the network.
   • Open System Settings > Printers & Scanners (System Preferences on older versions of macOS).
   • Select your OKI and click Remove Printer.
   • Click Add Printer, Scanner, or Fax, and choose your OKI from the list on the Default tab, where it appears through Bonjour.
   • In the Use menu, choose the entry that starts with OKI and your model name, then click Add.
4. If your OKI doesn't appear in the list, switch to the IP tab and enter the printer's IP address instead.
5. If the Use menu has no OKI option, the OKI Mac driver isn't installed. Many newer OKI models work with AirPrint without one, but for your model's full settings, download the Mac driver from oki.com, install it, and add the printer again.
6. Reset the printing system as a last resort. In Printers & Scanners, Control-click inside the printer list and choose Reset printing system. This removes every printer and every queued job on the Mac, so you'll need to add your printers again afterward.

If Your OKI Printer Keeps Going Offline

If the printer comes back today and drops off again by Friday, something is changing in the background. These fixes deal with the usual suspects.

Give the printer an address that doesn't change

OKI printers come set to get their IP address automatically. That's convenient until the router hands out a different one. You can stop that from either end:

• Reserve the address in your router. Look for a setting called DHCP reservation or address reservation in your router's admin page, and tie the printer's current address to it. Nothing changes on the printer.
• Set a fixed address on the printer. On many OKI MFPs, the path is Admin Setup > Network Menu > Network Setup > Network Setting > IP Address Set, then change it to Manual and enter the IP address, subnet mask, and gateway. The exact path varies by model, so check your manual if it doesn't match.

Pick an address outside the range your router assigns automatically, so no other device ends up with the same one. Then update the Windows port to match (Advanced Solution 3), or remove and re-add the printer on your Mac.

What's the admin password? It depends on the model. OKI lists 123456 for the C824, C834, and C844, and an admin name of admin with the password aaaaaa for the MC853 and MC873. Some newer OKI models use the printer's serial number in lowercase instead. If none of these work, check your model's manual or ask whoever set the printer up.

Turn on Auto Reconnect in OKI LPR Utility

If you'd rather not touch network settings, OKI LPR Utility can follow the printer to its new address. Open the utility as an administrator, go to Option > Setup, check Auto Reconnect, and click OK. The utility is a free download on your model's page at oki.com.

Adjust Sleep and Auto Power Off

If "offline" mostly shows up after the printer has been sitting idle, look at its power settings.

• Sleep mode: on the C824 series, for example, the printer goes into Power Save after 1 minute and Sleep after 15 minutes by default. You can lengthen the Sleep timer from the printer's menu or its web page. A longer timer uses a little more power but wakes up more reliably. Switching from a WSD port to Standard TCP/IP (Advanced Solution 2) often fixes wake-up problems on its own.
• Auto Power Off: on many OKI models, the printer switches itself off after 4 hours without use. On some models, like the C824 series, the default setting only does this when no network cable is connected and Wi-Fi is off, which is why it mostly affects USB printers. On others, like the MC853 and MC873, you can turn it off under Device Settings > Admin Setup > User Install > Power Setup > Auto Power Off.

Fix "Getting target IP failed. Please check DHCP settings."

This message means the printer asked your router for an address and didn't get one. Restart the router first, then the printer. If your network runs on IPv4 only, OKI suggests turning off DHCPv6 on the printer under Admin Setup > Network Menu > Network Setup > Network Setting. If there's no router handing out addresses at all, you'll need to set a fixed address on the printer as described above.

Reconnect after a new router or internet provider

When the router, the Wi-Fi password, or the internet service changes, OKI recommends setting up the printer's wireless connection again from scratch. Afterward, print a new network information page, because the printer's IP address has probably changed too, and update your computer to match.