Quick answer
If the scanner does not write the file to a shared folder, the most common causes are an incorrect network path, insufficient access permissions, or an outdated SMB version. Check whether the computer with the shared folder can see the scanner, whether the credentials are correct, and whether the folder is writable. Often, re-entering the path and permissions is enough.
How to recognize the problem
- Scanner reports an error when writing to the shared folder
- File does not appear in the folder even though the scanner says scanning was successful
- Scanning to a local folder works, but to a network folder does not
- Folder access works from a computer, but not from the scanner
- Sometimes it works, sometimes it does not (unstable network)
Most common causes
Incorrect network path
The scanner requires the exact path to the shared folder in the format `\\computer-name\folder-name`. If the computer name has changed or the folder has been moved, writing will not work.
Insufficient write permissions
The account the scanner uses must have write permission to the folder. Often the folder is shared as read-only or permissions have changed after a system update.
Outdated SMB version
Newer scanners and computers may require SMB v2 or v3, while older devices are set to SMB v1, which is disabled by default on newer Windows systems.
Incorrect credentials
If the account password has changed or the account has expired, the scanner will not be able to log in to the shared folder.
Network isolation or firewall
Windows Firewall or router rules may block the scanner's access to the computer. Check that the devices are on the same network and that sharing is allowed.
Step-by-step fix
- 1
Check that the computer can see the scanner and vice versa
On the computer with the shared folder, open
Command Promptand typeping scanner-IP-address. Then, from the scanner (if it has the option), send a test ping to the computer's IP. If ping fails, resolve the network connectivity before proceeding. - 2
Confirm the exact path to the shared folder
On the computer, open
File Explorer, find the folder you are sharing, right-click it, and selectProperties > Sharing. Note the network path that starts with\\. Make sure the scanner uses the same path. Windows usually does not distinguish between uppercase and lowercase letters in paths to shared folders, but check that the computer name and shared folder name are correct. - 3
Check sharing and security permissions
In the same
Sharingwindow, clickAdvanced Sharing > Permissionsand add the account the scanner uses withChangeorFull Controlpermission. Then, on theSecuritytab, add the same account and give itModifyorWritepermission. Without both types of permissions, writing will not work. - 4
Test access from another computer
From another computer on the network, open
File Explorerand type the path\\computer-name\folder-name. If it asks for credentials, enter the same username and password that you will enter in the scanner. If this does not work, the problem is with permissions or the network, not the scanner. - 5
Re-enter the settings in the scanner
On the scanner, open the settings for scanning to a network folder (often
Scan > Network Folderor similar). Delete the old path and enter the new one, along with the username and password. Save and run a test scan. - 6
Check the SMB version on the computer
If the scanner supports only SMB v1, on Windows 11 and Windows 10 open
Control Panel > Programs > Turn Windows features on or offand underSMB 1.0/CIFS File Sharing SupportenableSMB 1.0/CIFS Server(for the shared folder on Windows). After enabling, restart the computer if Windows prompts you to. Note: SMB v1 is insecure and should only be used if the scanner does not support newer versions. - 7
Temporarily disable the firewall for testing
On the computer with the shared folder, open
Windows Security > Firewall & network protectionand temporarily disable the firewall for the private network. If scanning works, immediately re-enable the firewall and add an exception for file and printer sharing instead of leaving it disabled permanently. - 8
Check that the folder is writable
On the computer, open
Command Promptand typenet shareto see the list of shared folders. Check permissions inProperties > Sharing > Advanced Sharing > Permissions, and free disk space inFile Explorer. Free up space if needed. - 9
Update the scanner firmware
Check the scanner's web interface (enter its IP address in a browser) for newer firmware. Updating may resolve compatibility with SMB v2/v3 and fix writing errors. Follow the manufacturer's update instructions carefully and do not interrupt power or network connection during the update.
If nothing helps: advanced checks
If all steps have been tried, check that the scanner and computer are on the same network (same router, no guest network). Sometimes the router isolates devices or assigns a dynamic IP address, so we recommend assigning a static IP address to the computer or a reservation on the router. Also, check that file sharing is enabled on the computer in Control Panel > Network and Internet > Network and Sharing Center > Advanced sharing settings. If the scanner supports only an older SMB protocol, consider replacing it with a newer model or using an intermediary computer to receive scans. For business networks, consult IT support before changing SMB settings as they affect security.
How to prevent it
- Regularly check that the shared folder permissions are correct
- Use a static IP address for the computer with the shared folder
- Update the scanner firmware and drivers
- Avoid SMB v1 and switch to newer versions where possible
When to call a professional
If you have tried all steps and the scanner still does not write files, or if it is a business network with strict security rules, contact IT support. They can safely check SMB settings, firewall, and network infrastructure.
IT infrastructure maintenance · Servers, networks, backup, security and helpdeskFAQ
Why does the scanner not see the shared folder even though other computers see it?
Most likely the scanner is using incorrect credentials or does not have write permission. Check the username and password in the scanner settings and the permissions on the folder.
Is it safe to enable SMB v1 because of the scanner?
SMB v1 is outdated and insecure. Enable it only if the scanner does not support newer versions and if the network is protected. A better solution is to replace the scanner or use an intermediary computer.
How do I know if the problem is in the network or the scanner?
Try accessing the shared folder from another computer. If another computer also has the problem, the cause is in the network or permissions. If only the scanner cannot, the problem is in the scanner settings.