OKI MC332, MC362 and MC562 Cannot Scan to a Windows Network Folder: SMB/CIFS Setup and Error Fixes

Last Updated on 07.08.2026 by DriverNew

If the OKI MC332, MC362 or MC562 does not save scans to a Windows network folder, reinstalling the scanner driver usually does not help. When using the Scan to Shared Folder function, the MFP connects to the computer over the network by itself. This operation requires the correct shared folder address, a separate Windows account with a password, write permission and access to the SMB port.

Below is a complete setup procedure from scratch, as well as separate solutions for the messages Server Login failed, File writing failed, Please check DNS settings, Please check the shared name, and for transmission errors without a clear explanation. The wording of a message may differ depending on the interface language and firmware version.

Models This Guide Applies To

The setup procedure applies to the following devices from the same series:

• OKI MC332dn;
• OKI MC342dn and MC342dw;
• OKI MC352dn;
• OKI MC362dn and MC362w;
• OKI MC562dn, MC562w and MC562dw;
• OKI ES3452 MFP;
• OKI ES5462 MFP and ES5462dw MFP;
• OKI MPS2731mc.

Menu item names may differ slightly on models with different control panels. On all of the listed variants, the shared folder profile uses the CIFS protocol, an address in the form \\computer\shared_folder and port 445 by default.

How to Identify the Cause by the Symptom

What You Need Before Setup

• a computer and MFP connected to the same local network;
• administrator rights on the computer;
• the computer’s IPv4 address;
• a separate local Windows account with a regular password;
• a folder located on the computer’s local drive;
• access to the MFP control panel.

The computer must be turned on and not in sleep mode while scanning. OneDrive folders, the Desktop and folders inside the user profile create additional restrictions. For the initial setup, it is better to use a simple path such as C:\Scans\OKI.

Step 1. Create a Separate Account for the MFP

Do not use guest access and do not disable password-protected sharing. A separate account allows you to give the MFP access only to the scan folder.

The examples use the name oki_scan. Choose a short name using Latin letters and no spaces. The password must be a regular account password, not a Windows Hello PIN. The password field in the profile of these MFPs accepts no more than 32 characters, so use a strong password up to 32 characters long.

Windows 11

1. Open Start > Settings > Accounts > Other users.
2. Next to the option for adding another user, click Add account.
3. Select I don’t have this person’s sign-in information.
4. Select Add a user without a Microsoft account.
5. Enter the name oki_scan, a password and answers to the security questions.
6. Leave the account type as Standard User. Administrator rights are not required for scanning.

Windows 10

1. Open Start > Settings > Accounts > Family & other users.
2. Click Add someone else to this PC.
3. Select I don’t have this person’s sign-in information.
4. Select Add a user without a Microsoft account.
5. Enter the name oki_scan, a password and the security question answers.
6. Do not add this account to the Administrators group.

Step 2. Create a Folder and Configure Two Levels of Permissions

1. Open File Explorer.
2. Create the folder C:\Scans, and inside it create the folder OKI.
3. Right-click the OKI folder and select Properties.
4. Open the Sharing tab.
5. Click Advanced Sharing.
6. Select Share this folder.
7. In the Share name field, enter OKI-Scan.
8. Click Permissions.
9. Remove the Everyone group if it was added automatically and access for other users is not required.
10. Click Add, enter oki_scan, click Check Names, then OK.
11. For the oki_scan account, allow Change and Read. Full Control is not required.
12. Confirm the changes, but do not close the folder properties window yet.

Now configure the second level. Share permissions alone are not sufficient: Windows also checks file system permissions.

1. In the OKI folder properties, open the Security tab.
2. Click Edit > Add.
3. Enter oki_scan, click Check Names and OK.
4. Select the account you added.
5. In the Allow column, select Modify. Read and write permissions will be enabled with it.
6. Click Apply and OK.

To save a file, both tabs must allow writing at the same time: Sharing and Security. If only read access is allowed on either of them, the MFP will be able to sign in to the computer but will finish the operation with the File writing failed message.

Step 3. Allow Sharing in Windows

Windows 11

1. Open Settings > Network & internet.
2. Open the properties of the current Ethernet or Wi-Fi connection.
3. For Network profile type, select Private network. Do this only for a trusted home or work network.
4. Return to Network & internet and open Advanced network settings > Advanced sharing settings.
5. Under Private networks, turn on Network discovery and File and printer sharing.
6. Do not disable password-protected sharing: the MFP will sign in using the oki_scan account.

Windows 10

1. Open Start > Settings > Network & Internet.
2. Open the properties of the active Ethernet or Wi-Fi connection and select the Private profile.
3. Open Control Panel > Network and Internet > Network and Sharing Center.
4. On the left, click Change advanced sharing settings.
5. Under the Private profile, turn on network discovery and file and printer sharing.
6. Save the changes. Leave password-protected sharing turned on.

There is no need to completely disable Windows Firewall. Enabling file and printer sharing creates the required rules for a private network. If the settings were previously changed manually, open Windows Security > Firewall & network protection > Allow an app through firewall and make sure File and Printer Sharing is allowed for private networks.

Step 4. Find the Computer Name and IPv4 Address

The computer name will be needed for the user name, while the IPv4 address will provide a reliable shared folder address.

1. Press Win + R, enter cmd and press Enter.
2. Enter the command:

hostname

Write down the resulting name, for example OFFICE-PC.

3. In the same window, enter:

ipconfig

4. Find the active Ethernet or Wi-Fi connection and write down the IPv4 Address line, for example 192.168.1.25.

For the MFP profile, use one of the following addresses:

\\192.168.1.25\OKI-Scan
\\OFFICE-PC\OKI-Scan

The option using the IP address does not depend on DNS and is usually more reliable for an older MFP. Reserve this IPv4 address for the computer in the router’s DHCP settings. Do not assign an arbitrary static address until you have checked the DHCP range, gateway and subnet mask: if two devices receive the same address, intermittent failures will occur.

Step 5. Check Port 445 and Sign-In Before Configuring the MFP

This test separates a Windows problem from an error in the OKI profile. If possible, perform it from another computer on the same local network.

Check the SMB Port

1. Open PowerShell or Terminal.
2. Enter the command, replacing the address with the IPv4 address of the computer that hosts the shared folder:

Test-NetConnection 192.168.1.25 -Port 445

• TcpTestSucceeded : True — the SMB service is accessible over the network;
• TcpTestSucceeded : False — check the network profile, file sharing, firewall, computer address and whether Wi-Fi client isolation is enabled.

Do not expose port 445 on the Internet router or create Internet port forwarding for it. It should be accessible only inside a trusted local network.

Check the User Name and Password

1. Open Command Prompt on another computer on the same network.
2. Enter the command, replacing the address and computer name with your own values:

net use \\192.168.1.25\OKI-Scan /user:OFFICE-PC\oki_scan *

3. Enter the password for the oki_scan account. No characters are displayed while you type — this is normal.
4. After the success message appears, open \\192.168.1.25\OKI-Scan in File Explorer.
5. Create a small text file in the folder, then delete it. This checks not only sign-in but also write permission.
6. After the test, disconnect the connection using the command:

net use \\192.168.1.25\OKI-Scan /delete

If system error 1219 appears regarding multiple connections to the same server, close any open windows for that network computer, disconnect any previously mapped network drives to it, and repeat the test. This error occurs on the computer used for testing and does not mean that the MFP is faulty.

Do not proceed to the OKI profile until the test account can create a file. Otherwise, the same error will continue to occur regardless of the settings on the control panel.

Step 6. Create a Shared Folder Profile on the OKI

The menu item names below correspond to the control panel of this series. On the MC562, ES5462 and MPS2731mc models, the data can also be entered using the physical keyboard.

1. Press the SETTING button.
2. Select Profile and press OK.
3. Select an unused profile number and open the option to register a new profile.
4. In the Profile Name field, enter a clear name up to 16 characters long, for example WinScan.
5. For Protocol, select CIFS.
6. In the Target URL field, enter the prepared address:

\\192.168.1.25\OKI-Scan

7. Leave Port No. set to 445.
8. In the User Name field, first enter oki_scan.
9. In the Password field, enter the password for this local account. Passwords are case-sensitive.
10. In the File Name field, enter Scan#n. The #n tag adds a sequential number and helps prevent previous scans from being overwritten.
11. If the folder name contains characters outside the English alphabet, select UTF-16 for CIFS Character Set. For more predictable operation, it is better to keep the share name OKI-Scan.
12. Press OK to save the profile.

If sign-in with the name oki_scan fails, change only the user field and try the format OFFICE-PC\oki_scan, where OFFICE-PC is the result of the hostname command. On a domain network, use the format user@domain and confirm the settings with the administrator. Do not change the path, password and user name at the same time; otherwise, it will be impossible to determine which correction solved the problem.

Step 7. Perform a Test Scan

1. Place the original face up in the ADF or face down on the platen glass.
2. Press the SCAN button.
3. Select Shared Folder and press OK.
4. Select Select Profile, then select the WinScan profile you created.
5. Press MONO for black-and-white scanning or COLOR for color scanning.
6. When scanning is complete, open C:\Scans\OKI on the computer and check for the new file.

For the first test, use one sheet, a standard resolution and PDF. If one sheet is saved successfully but a large document fails, the basic connection is already working; then check free disk space, timeout, file size and network stability.

Please check DNS settings Error

The MFP could not resolve the computer name to an IP address. Correct only the profile address:

1. On the computer, run ipconfig and write down the IPv4 address of the active connection.
2. Open the profile on the MFP.
3. Replace \\OFFICE-PC\OKI-Scan with \\192.168.1.25\OKI-Scan.
4. Save the profile and repeat the test.
5. Reserve the computer’s address in the router’s DHCP settings so that it does not change after a restart.

If the address is already entered numerically, the error may mean that the computer and MFP are on different networks, wireless client isolation is enabled, or the address of the wrong interface was entered — for example, the VPN interface instead of Ethernet or Wi-Fi.

Please check the shared name Error

1. Open the properties of the OKI folder and the Sharing tab.
2. Check the Network Path line. It should end with the share name, for example \OKI-Scan.
3. In the profile, enter only \\computer_address\share_name.
4. Remove any unnecessary trailing backslash, file name or drive letter if they were added.
5. For testing, temporarily use a short share name containing Latin letters, numbers and a hyphen, with no spaces.

The folder may be named OKI on the drive, while its share name is OKI-Scan. The second name is the one used in the network path.

Server Login failed Error

This message appears after the network connection has been established, when Windows rejects the credentials. Check one item at a time:

1. Enter the password in the profile again. Check letter case and make sure there is no space at the beginning or end.
2. Make sure you entered the account password, not the Windows Hello PIN.
3. Check that the oki_scan account is not disabled and does not have a blank password.
4. Run the net use test from another computer. If Windows does not accept the same credentials, fix the account first.
5. Try the name oki_scan, then OFFICE-PC\oki_scan.
6. If the password is longer than 32 characters, set a new strong password up to 32 characters long for this separate account and update the profile.
7. If the account password was changed, the password stored in the MFP is not updated automatically. Enter the new password in every profile.
8. In a domain, use user@domain; do not use a local account with the same name as a domain user without explicitly specifying the account context.

Do not fix a sign-in error by disabling password protection or enabling guest connections. These changes reduce the security of the entire computer and hide the real cause.

File writing failed Error

With this error, sign-in may have succeeded, but Windows prevented the file from being created or the MFP could not complete the write operation.

1. Open C:\Scans\OKI and check the free disk space.
2. On the Sharing > Advanced Sharing > Permissions page, make sure oki_scan has Change and Read permissions.
3. On the Security tab, make sure the same account has Modify permission.
4. Repeat the test using net use and create a file under this account.
5. Simplify the file name in the profile to Scan#n. Remove colons, quotation marks, slashes and other invalid characters.
6. If the folder is inside OneDrive, on the Desktop or in a protected directory, create a new C:\Scans\OKI folder and change the profile.
7. Check the antivirus protection history. If file writing is blocked by folder protection, allow access only to the specially created folder; do not disable all protection.

If a zero-byte file appears in the folder and then the operation ends with an error, the account already has at least some permissions. Check free space, antivirus software, network stability and try scanning one sheet at a low resolution.

Port 445 Is Not Accessible

If Test-NetConnection shows False, perform the following steps:

1. Check that you are testing the IPv4 address of the computer where the folder was created.
2. Make sure the Windows network has the Private profile.
3. Enable file and printer sharing for the private network.
4. Open Win + R > services.msc and make sure the Server service is running.
5. If a third-party firewall is being used, allow incoming SMB traffic from the local subnet to this computer. Do not disable protection completely.
6. Make sure the Wi-Fi network is not a guest network and that client isolation is not enabled on the router.
7. If the computer is connected to Ethernet, Wi-Fi and VPN at the same time, run ipconfig again and use the address of the interface that is on the same network as the MFP.

Direct SMB connections use TCP port 445. Trying ports 21, 80, 137, 138 or 139 when CIFS is selected will not fix a normal modern Windows configuration. Ports 21 and 80 belong to other protocols, and the older NetBIOS ports should not be used as a substitute for SMB over 445.

Scanning Stops Working After a Restart or Sleep

1. Compare the current ipconfig result with the address in the MFP profile.
2. Reserve the computer’s IPv4 address in the router’s DHCP settings.
3. Check whether Windows changed the connection from a private network to a public network.
4. Make sure the computer is not sleeping while scanning. For testing, wake it up and repeat the operation.
5. If a laptop is connected over Wi-Fi, check that it has not switched to another access point or guest network.
6. If the password for the oki_scan account was changed, update it in the MFP profile.

It is not necessary to disable sleep permanently. Configure the sleep time according to your workflow, or use a computer or network storage device for the shared folder that remains available on the local network.

All Settings Are Correct, but the MFP Still Cannot Connect

If port 445 is accessible, the net use command accepts the same credentials, a test file can be created, and the profile using the IP address still ends with a transmission or sign-in error, an SMB requirements incompatibility is likely.

In Windows 11 version 24H2 and later releases, SMB signing is required by default for incoming and outgoing SMB connections. An older network device that cannot negotiate the required SMB version, authentication method or packet signing may fail to connect even when the permissions are correct. The message on the display alone does not indicate exactly which negotiation stage failed.

Update the MFP Firmware First

1. Print the configuration information and write down the installed firmware version.
2. Open the support page for your exact model and compare the installed version with the available version.
3. For the MC562dnw, you can start with the OKI MC562dnw firmware page. For another model, select it on the support website first.
4. Use the current version of Firmware Update Tool. This program downloads and installs the appropriate firmware; the utility installer file itself is not the device firmware.
5. Do not turn off the MFP or computer and do not interrupt the network connection during the update.
6. After the update, restart the MFP and test the profile again using port 445.

Updating the firmware is a compatibility check, not a guaranteed fix for every SMB error. It will not correct an incorrect password or missing write permission.

Do Not Disable Required SMB Signing or Allow Guest Sign-In

Internet guides often suggest disabling SMB signing, enabling insecure guest logons, allowing older NTLM authentication or installing the SMB1 component. For an ordinary user, this is a poor permanent solution: it changes the protection of all network connections on the computer and may stop working again after a Windows update or when an organization policy is applied.

If the MFP with current firmware cannot connect to modern Windows without weakening its security, choose one of the following options:

• use Scan to Computer through the scanner driver and ActKey;
• save scans to a USB drive if permitted by your organization’s rules;
• configure an FTP or HTTP profile on a server inside the local network, with access restricted to a separate account;
• use supported network storage where access by the MFP can be securely restricted to a separate folder and the local network;
• on a business network, leave any SMB policy changes to the system administrator: the solution should be applied specifically and with network segmentation in mind.

Do not expose an old FTP, HTTP or SMB service directly to the Internet. An alternative server should be accessible only from a trusted local network.

What to Check If One Sheet Scans Successfully but a Large Document Is Not Saved

1. Check the free disk space on the computer.
2. Reduce the scanning resolution and repeat the test.
3. For color pages, select PDF with standard quality instead of an uncompressed format.
4. Check the quality of the MFP’s and computer’s Wi-Fi connection. For diagnostics, temporarily connect the device using an Ethernet cable if the model and network allow it.
5. Make sure the computer does not enter sleep mode while processing a large job.
6. Check whether antivirus software creates the file and then blocks completion of the write operation.
7. Scan the same pages in several smaller jobs. If they are saved successfully, the credentials and permissions are configured correctly, and the problem is related to job size or transmission stability.

After successful setup, do not give the oki_scan account access to other folders and do not use it for normal work on the computer. This keeps the scanning function working while limiting possible MFP access to the prepared directory only.