Cannot access NAS box in WIndows 11

[Enquiries]

Thanks for your QNAP TS464 YT videos - very helpful so far. I finished the first one and set up my QNAP with NAS name+details, then storage pool, then volume. The from the second video set up a shared folder and dragged a test file into that folder. I did not download the first software as instructed as I want to have the NAS accessible via the internet.
I can access the file via QFinder and doulbe click to view it (it is a simple text file), but I am unable to map the NAS to a network drive in Windows 11.
When I click the NAS which is visible in Windows Explorer-> Network instead of getting a login dialogue I get the error "\\NASnnnnn is not accessibile. You might not have permission etc. etc.".
Details-
System Windows 11.
NAS (QNAP TS464) is plugged directly into the router.
Private Network
Discovery: On, File and Printer Sharing: On
IP and DNS both set to obtain automatically.

Any help you can provide will be gratefully received.

[williamdum]

Thanks for your QNAP TS464 YT videos - very helpful so far. I finished the first one and set up my QNAP with NAS name+details, then storage pool, then volume. The from the second video set up a shared folder and dragged a test file into that folder. I did not download the first software as instructed as I want to have the NAS accessible via the internet.
I can access the file via QFinder and doulbe click to view it (it is a simple text file), but I am unable to map the NAS to a network drive in Windows 11.
When I click the NAS which is visible in Windows Explorer-> Network instead of getting a login dialogue I get the error "\\NASnnnnn is not accessibile. You might not have permission etc. etc.".
Details-
System Windows 11.
NAS (QNAP TS464) is plugged directly into the router.
Private Network
Discovery: On, File and Printer Sharing: On
IP and DNS both set to obtain automatically.

Any help you can provide will be gratefully received.

I also get the same issue. Did you find any solution?

[ed]

Thank you for reaching out and sharing the details of your setup. Here's a step-by-step guide to resolve the issue:

1. Verify Network and Permissions
Ensure that the NAS and your Windows 11 PC are on the same network subnet.
Check the shared folder permissions on the QNAP. Go to Control Panel > Privilege > Shared Folders and confirm your user account has read/write permissions for the folder.
2. Enable SMB Protocol
On the NAS: Go to Control Panel > Network & File Services > Win/Mac/NFS > Microsoft Networking and ensure SMB service is enabled.
On Windows 11:
Open Control Panel > Programs > Turn Windows features on or off.
Ensure SMB 1.0/CIFS File Sharing Support is checked (though SMB 3.0 is preferred).
3. Adjust Windows Credentials
Open Credential Manager in Windows and remove any existing credentials for the NAS.
Re-map the drive via File Explorer > This PC > Map Network Drive, and manually input:
\[NAS_IP][Shared_Folder]
Enter your NAS username and password when prompted.
4. Network Security Settings
In Windows, go to Control Panel > Network and Sharing Center > Advanced Sharing Settings, and ensure:
Network discovery and File and Printer Sharing are ON.
Password-protected sharing is OFF temporarily for troubleshooting.
5. Router Configuration
Check if your router has any isolation settings (like "AP Isolation") that might prevent communication between devices.