OKI B432, MB472 and MB492 constantly “Offline”: how to replace WSD with a Standard TCP/IP Port

Last Updated on 11.08.2026 by DriverNew

An OKI B432, MB472 or MB492 may appear in Windows as “Offline” even though the device is turned on, connected to the router and accessible from other computers. Sometimes printing starts working again after restarting the printer or reinstalling the driver, but the problem returns the next day.

The most common cause is a WSD queue or a change in the printer’s IP address. The router assigns the device a new address, while Windows continues sending print jobs to the old one. A more reliable solution is to keep the IP address fixed and use a Standard TCP/IP Port with the RAW protocol and port 9100.

Where to start

Print an OKI network information page and write down the current IPv4 address. Then compare it with the address on the Ports tab in the printer properties. If WSD is selected or a different IP address is specified, create a new Standard TCP/IP Port. There is no need to reinstall the driver before performing this check.

Which models this guide applies to

The procedure for checking the port and IP address applies to the following models:

OKI B412dn, B432dn, B432dnw and B512dn;
OKI ES4132dn and ES5112dn;
OKI MB472dn, MB472dnw, MB492dn and MB562dnw;
OKI ES4172LP MFP, ES4192 MFP, ES5162 MFP and ES5162LP MFP.

Wired models use Ethernet, while dnw versions may also use a wireless connection. It is important to check the address of the active network interface. A USB connection does not use a network IP address and requires different troubleshooting.

Determine the type of problem

Symptom	Likely cause	First check
The printer worked, but after restarting the router or a power outage it became “Offline”	The address assigned by DHCP changed	Compare the current IPv4 address with the Windows port address
The OKI web page opens, but Windows shows Offline	WSD, an old port or an incorrect SNMP status check	Check the Ports tab and SNMP Status
One computer prints, while another shows “Offline”	An incorrect queue or port is configured only on the second computer	Compare the ports of both queues
The IP address starts with 169.254 or is 0.0.0.0	The printer did not receive a valid address from the router	Check the cable, Wi-Fi and DHCP before changing Windows settings
The queue uses USB001	This is a USB queue, not a network connection	Do not replace it with an IP port if the printer is supposed to work via USB

Step 1. Find the printer’s current IP address

B412, B432, B512, ES4132 and ES5112

Load a sheet of A4 or Letter paper into the tray.
On the printer control panel, use the arrow buttons to open PRINT INFO.
Press OK.
Select NETWORK.
Press OK to print Network Information.
Find the IPv4 Address value.

MB472, MB492, MB562 and related ES MFPs

Load paper into the main tray.
Press the SETTING button.
Select Reports and press OK.
Open System.
Select Network Information.
Confirm printing and find IPv4 Address on the page.

How to evaluate the address

192.168.x.x, 10.x.x.x or 172.16–172.31.x.x. This is usually a normal private address on a home or office network.
169.254.x.x. The device did not receive an address from the DHCP server and assigned itself a temporary address. Restore the connection to the router first.
0.0.0.0. The network interface is not configured or the connection has not yet been established.
The address is different from the one recorded earlier. You need to change the Windows port and keep the new address fixed.

On a model with Wi-Fi, do not confuse the wireless interface address with the Ethernet address. If the cable and Wi-Fi connections were configured at different times, the network information page may contain information about both connections.

Step 2. Check whether the OKI device is accessible from the computer

Make sure the computer is connected to the same router as the printer.
Temporarily disconnect the VPN if it redirects local network traffic.
Open a browser.
Enter the printer address, for example http://192.168.1.25.
Press Enter.

The OKI web page opens. The network connection is working. Correct the Windows queue and port.
The page does not open. Check whether the computer is on the same network, whether a guest Wi-Fi network is being used and whether the address was entered correctly.

You can also check connectivity with the ping command:

Press Win + R.
Enter cmd and press Enter.
Enter the command, replacing the address with your printer’s address:

ping 192.168.1.25

Replies showing a time in milliseconds confirm connectivity. No ping reply does not always indicate a problem: some network settings block these requests. If the web interface opens, proceed to checking the port.

Step 3. Disable an accidentally enabled offline mode

Windows 11

Open Settings > Bluetooth & devices > Printers & scanners.
Select the required OKI printer.
Click Open print queue.
Open the printer menu. Depending on the Windows build, it may be under the three-dot button.
If Use Printer Offline is selected, clear it.
Cancel old jobs that remain in the queue.

Windows 10

Open Settings > Devices > Printers & scanners.
Select the OKI printer and click Open queue.
Open the Printer menu.
Clear Use Printer Offline.
Cancel any stuck documents.

If the required command is not displayed, press Win + R, enter shell:PrintersFolder and press Enter. Right-click the queue, select the option to view print jobs and open the Printer menu.

If offline mode returns after a restart, clearing the option alone is not enough. Continue checking the port.

Step 4. Check the port being used

How to open the properties in Windows 11

Open Settings > Bluetooth & devices > Printers & scanners.
Select the required OKI printer.
Click Printer properties.
Open the Ports tab.

How to open the properties in Windows 10

Open Settings > Devices > Printers & scanners.
Select the OKI printer and click Manage.
Click Printer properties.
Open the Ports tab.

If the button is missing, use shell:PrintersFolder, then select Printer properties. On the Ports tab, find the row with the selected check box.

Selected port	What it means	Action
WSD-…	Windows discovers the printer dynamically; after network changes, the queue may become unstable	Create a Standard TCP/IP Port
IP_192.168… or Standard TCP/IP Port	The queue already uses a fixed address	Compare the port address with the printer’s current IPv4 address
USB001, USB002	The queue is intended for USB	Do not use it as a network queue; create a separate TCP/IP queue
PORTPROMPT, FILE or NUL	Data is not being sent to a physical printer	Select or create a network port

Step 5. Create a Standard TCP/IP Port

The following wizard is almost identical in Windows 11 and Windows 10.

On the Ports tab, click Add Port.
Select Standard TCP/IP Port.
Click New Port.
In the wizard, click Next.
In the printer name or IP address field, enter the IPv4 address from the printed network information page.
The port name will be created automatically. Do not enter the address of an old printer.
Click Next.
If the wizard detects the device automatically, finish creating the port.
If an additional port information window appears, select Custom and click Settings.
Select the RAW protocol.
Set the port number to 9100.
Clear the SNMP Status Enabled check box.
Click OK, then Next and Finish.
Return to the Ports tab and make sure the check box is selected next to the new port.
Click Apply.
On the General tab, click Print Test Page.

Why SNMP Status Enabled is cleared

This check box controls only Windows port status monitoring. If SNMP requests are blocked by the router, firewall or the device’s own settings, Windows may incorrectly show Offline even though RAW printing to port 9100 works. You do not need to disable SNMP on the printer itself for the entire network.

Step 6. If a Standard TCP/IP Port already exists

On the Ports tab, select the printer’s existing port.
Click Configure Port.
Compare the Printer Name or IP Address field with the current IPv4 address shown on Network Information.
If the address is old, replace it with the new one.
Select RAW and port 9100.
Clear SNMP Status Enabled.
Click OK and Apply.
Print a test page.

If the address field is unavailable or this port is used by another printer, do not change it. Create a new Standard TCP/IP Port as described in the previous section and assign it only to the required OKI queue.

Step 7. Keep the IP address fixed so the problem does not return

Option 1. Reserve the address in the router

This is the preferred method for home and small office networks: the printer continues receiving its network settings automatically, but the router always assigns it the same address.

On the Network Information page, find the MAC Address of the active network interface.
Open the router’s web interface.
Find the list of DHCP clients or connected devices.
Find the OKI device by name, IP address or MAC address.
Select Reserve, Address Reservation, Static Lease or a similar command.
Reserve the current IPv4 address for the printer’s MAC address.
Save the settings and restart the printer.
Print Network Information again and make sure the address has not changed.

Section names vary depending on the router manufacturer. Do not create a reservation for the Wi-Fi MAC address if the printer is actually connected by cable, and vice versa.

Option 2. Set a manual address on B412, B432, B512, ES4132 or ES5112

Before you begin, determine an unused address, subnet mask and gateway for your network.
On the control panel, open ADMIN SETUP.
Enter the current administrator password.
Open NETWORK SETUP.
Select IP ADDRESS SET > MANUAL.
Open IPV4 ADDRESS and enter the prepared address.
Enter the correct SUBNET MASK and GATEWAY ADDRESS values.
Save the settings and wait for the network interface to restart.
Create a Windows port for the new address.

Option 3. Set a manual address on MB472, MB492, MB562 or ES MFP

Prepare an unused IP address, subnet mask, gateway and, if necessary, DNS settings.
Press SETTING.
Select Easy Setup and press OK.
Enter the administrator password and confirm the login.
Select Network Setting.
Select Manual.
Enter the IP address and press OK.
Enter the subnet mask and gateway.
If the MFP uses Scan to E-mail, Internet Fax or Scan to Shared Folder, do not skip the required DNS and WINS settings.
Complete the setup and wait for the settings to be applied.
Change the Windows port to the new address.

Do not choose an arbitrary static address

The address must belong to the same subnet, must not be used by another device and must not conflict with the dynamic DHCP range. Incorrect values can make the printer inaccessible and disrupt Scan to Shared Folder or e-mail sending. If you do not know the required network settings, use DHCP reservation in the router.

Step 8. Remove duplicate queues only after successful testing

Windows may keep several queues for the same model: WSD, IPP, USB and Standard TCP/IP. First determine which queue works correctly.

Print a test page through the queue that uses the new Standard TCP/IP Port.
Open its properties and make sure the PCL6 driver for the exact OKI model is selected on the Advanced tab.
Rename the working queue, for example OKI B432 TCP-IP or OKI MB472 TCP-IP.
Open Printers & scanners.
In the printer settings section, disable Let Windows manage my default printer if you want to keep one printer as the default.
Set the tested TCP/IP queue as the default printer.
Delete the old WSD or IPP queue only after ordinary documents print correctly through the new queue.
Do not delete the USB queue if it is used on the same computer as a backup connection.

If the web interface opens but the printer remains Offline

Open Printer properties > Ports again.
Make sure the new Standard TCP/IP Port is selected, not WSD.
Open Configure Port and check RAW, 9100 and that SNMP Status is disabled.
Open the queue and clear offline mode.
Delete any stuck print jobs.
Press Win + R, enter services.msc and restart Print Spooler.
Temporarily test printing without a VPN and third-party firewall.
Make sure the computer is not connected to a guest network that blocks access to local devices.
Print the internal Configuration or Network Information page. If the internal page does not print, troubleshoot the device itself first.

If the browser opens the OKI page but port 9100 is blocked by the corporate network, RAW printing must be allowed between the computer and the printer’s IP address. On a managed computer, this should be done by the network administrator.

If the driver or queue is corrupted

Reinstallation is required only when the correct TCP/IP port has been created, the device is accessible, but the test page still cannot be sent, or when Microsoft IPP Class Driver or a driver for another model is selected in the properties.

Models	PCL6 package
B412, B432, B512, ES4132, ES5112	PCL Printer Driver 1.1.13
MB472, MB492, MB562 and related ES MFPs	PCL Printer Driver 1.1.4

Remove only the faulty queue.
Install the PCL6 package for the exact model group.
When selecting the connection type, choose Network if the installer offers this option.
Create or select a Standard TCP/IP Port with the reserved address.
Print a test page before removing any other queues.

Methods that do not fix the underlying cause

Action	Why the problem returns
Reinstall the driver every time	The new queue receives WSD again or uses the current dynamic address
Only restart the printer and computer	Connectivity may be restored temporarily, but the IP address and port remain unstable
Assign a random static IP address	An address conflict or incorrect subnet may result
Disable IPv6 throughout Windows	This is not required for RAW printing over IPv4 and may affect other network functions
Completely disable SNMP on the printer	It is sufficient to clear SNMP Status Enabled for the specific Windows port; disabling it globally may disrupt monitoring
Reset all OKI network settings	IP, DNS, SMTP, address profiles and other settings unrelated to the Offline status will be lost

If the network-connected OKI device is accessible in a browser but Windows shows “Offline”, first replace WSD with a Standard TCP/IP Port and check RAW 9100. After printing works successfully, reserve the IP address in the router. This procedure fixes the cause of recurring Offline status and usually allows you to keep the PCL6 driver that is already installed.