After replacing the router, an OKI MFP may stop printing and scanning over the network even though the new Wi-Fi works normally on phones and computers. The cause is usually not the driver: the MFP still has the old network name and password stored in memory, the new router uses an incompatible security mode, or the device has received a different IP address.<\/p>\n
First, restore the connection between the MFP and the router. Only after that should you fix the print queue on the computer. Reinstalling the driver before a working network connection is established will not solve the problem.<\/p>\n
Two limitations of this series<\/strong><\/p>\n The MFP connects to a wireless network only through an access point or router \u2014 in infrastructure mode. A direct wireless connection between a computer or phone and the MFP is not supported.<\/p>\n Wired and wireless network connections cannot be used at the same time. Before configuring Wi-Fi, disconnect the Ethernet cable from the MFP’s network port.<\/p>\n<\/div>\n Built-in wireless connectivity is available on the following models:<\/p>\n OKI MC332dn, MC342dn, MC352dn, MC362dn, MC562dn, ES3452 MFP and ES5462 MFP do not connect directly to Wi-Fi. They can be connected to the router with an Ethernet cable, after which computers and phones on the same local network can use the MFP.<\/p>\n The menu item names below are given in English. If another language is selected on the control panel, use the corresponding items in the localized interface.<\/p>\n Do not enter the password again until you have checked the status of the wireless interface.<\/p>\n The RSSI<\/strong> value indicates the strength of the received radio signal. If the MFP connects when it is near the router but loses the connection after being returned to its permanent location, the cause is usually a weak signal or interference rather than the password.<\/p>\n If the network name and password have not changed, first try to restore the saved connection:<\/p>\n Wait up to one minute and check Wireless Information \u2192 State<\/strong> again. If the connection is not restored, proceed to WPS or manual setup.<\/p>\n The models covered here support IEEE 802.11b\/g\/n wireless standards and WEP, WPA with TKIP, and WPA2 with AES security modes. For a modern router, WPA2-Personal with AES encryption<\/strong> is recommended.<\/p>\n Do not switch the network to WEP or WPA\/TKIP<\/strong><\/p>\n These outdated modes are listed among the MFP’s capabilities, but they provide weak security. If the new router operates only with WPA3 and the MFP cannot connect, create a separate printer network using WPA2-Personal\/AES. Do not disable the Wi-Fi password for testing.<\/p>\n<\/div>\n Open the router settings and check the following:<\/p>\n If the router uses one common name for both 2.4 and 5 GHz, first try a normal connection. Separate the bands only if the MFP cannot see the network or regularly loses it because of automatic band switching.<\/p>\n Use WPS-PBC if the router has a dedicated WPS button or if this function can be enabled in its web interface.<\/p>\n Do not confuse WPS with Reset.<\/strong> On some routers the buttons are combined, while on others reset is performed using a separate recessed button. Before pressing and holding a button, check the label on the router or its instructions.<\/p>\n<\/div>\n After a successful connection, a message may appear stating that wired communication is disabled. This is normal: Ethernet and Wi-Fi cannot operate simultaneously on this series.<\/p>\n The Connection failed. Timeout<\/strong> message means that the MFP did not find a suitable access point within the allotted time.<\/p>\n The Overlap<\/strong> message appears if the MFP detects several access points with WPS active at the same time.<\/p>\n Use this method only if the router allows a wireless device to be registered using a PIN and WPS-PBC is unavailable.<\/p>\n Manual setup is preferable if WPS is disabled, unavailable or repeatedly ends with an error.<\/p>\n If the password is difficult to enter on the control panel, do not shorten the main password and do not disable security. Create a separate network for the printer on the router with a clear SSID and a strong password using Latin letters and numbers. Use at least 12 characters.<\/p>\n The hidden network name is also case-sensitive. If manual entry repeatedly fails, temporarily enable SSID broadcasting, connect the MFP normally and only then hide the network again. Keep in mind that hiding the SSID by itself is not a substitute for strong encryption.<\/p>\n Check the possible causes in order:<\/p>\n After each change, wait until the router’s wireless network has fully restarted. Changing several settings at the same time makes it difficult to determine the cause.<\/p>\n The Connected<\/strong> message confirms the wireless connection, but the MFP also needs a valid IP address for printing.<\/p>\n After replacing the router, the MFP often receives a new IP address. Windows continues to send jobs to the old address and shows the printer as Offline<\/strong> even though Wi-Fi on the MFP has already been restored.<\/p>\n If Standard TCP\/IP Port<\/strong> is selected:<\/p>\n If a WSD<\/strong> port is selected or the old address cannot be changed:<\/p>\n Do not remove the old queue until a test page has printed successfully through the new port.<\/p>\n If several identical OKI queues are installed in Windows, identify the working one by printing a test page. After that, remove only the outdated duplicates.<\/p>\n The safest method is to create a DHCP reservation on the router. The MFP will continue to receive its settings automatically, but the router will always assign it the same address.<\/p>\n Do not assign an arbitrary static IP address on the control panel if you do not know the router address, subnet mask and DHCP range being used. An incorrect setting may create an address conflict with another device.<\/p>\n When Wi-Fi is used, the connection on this series may temporarily disconnect in sleep mode. After waking, the MFP automatically reconnects to the same access point, but recovery may take up to one minute.<\/p>\n Normal wake-up from sleep should not require the SSID and password to be entered again. If the password must be entered after every sleep cycle, check signal strength, WPA2\/AES, DHCP and Mesh network settings.<\/p>\n For testing, you can temporarily increase the time before the MFP enters sleep mode. If the disconnections stop, restore a reasonable sleep time and correct the signal or automatic reconnection problem. Do not leave power saving disabled unnecessarily.<\/p>\n Update the MFP firmware only after checking the network and only with a file intended for the exact model and region. Stable power and a reliable connection are required during the update; firmware updating should not be used as the first solution for a normal password error.<\/p>\n If the Mac continues to use the old address:<\/p>\nWhich models this guide applies to<\/h2>\n
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First determine at which stage the connection was lost<\/h2>\n
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Step 1. Prepare the MFP and router<\/h2>\n
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Password<\/code> and password<\/code> are different passwords.<\/li>\nSETTING \u2192 Wireless Setting \u2192 Wireless reconnection<\/pre>\n
Step 2. Check the compatibility of the new router settings<\/h2>\n
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Step 3. Connect the MFP using the WPS button<\/h2>\n
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aaaaaa<\/code>. If it does not work, use the password set during the initial setup. Do not perform a full reset simply because the password is unknown.<\/li>\nConnection failed. Timeout error<\/h3>\n
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Overlap error<\/h3>\n
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Connecting using WPS-PIN<\/h3>\n
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Step 4. Select the network and enter the password manually<\/h2>\n
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Connecting to a hidden network<\/h3>\n
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If the password is correct but the connection is not established<\/h2>\n
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Step 5. Check the IP address after connecting<\/h2>\n
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192.168.1.40<\/code>.<\/li>\n\n
Check access to the MFP from a computer<\/h3>\n
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http:\/\/192.168.1.40<\/pre>\n
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Step 6. Correct the printer address in Windows 11<\/h2>\n
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9100<\/code>.<\/li>\nStep 7. Correct the printer address in Windows 10<\/h2>\n
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Reserve the IP address so the problem does not recur<\/h2>\n
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If the MFP disappears from the network after entering sleep mode<\/h2>\n
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If Wi-Fi disconnects after several hours or days<\/h2>\n
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Connecting a Mac, iPhone, iPad and Android device after changing the network<\/h2>\n
macOS<\/h3>\n
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