How to Access UGREEN NAS Files via WebDAV

WebDAV gives computers and compatible applications live access to authorized NAS folders. You can open, edit, upload, and organize files without manually downloading and re-uploading each file.

To access UGREEN NAS through WebDAV, open Control Panel > File Service > WebDAV, enable the service, and use HTTPS port 5006. In Windows, map the WebDAV address as a network drive. On macOS or Linux, connect through a compatible file manager.

Key Takeaways

• Enable WebDAV under Control Panel > File Service > WebDAV.
• The default HTTP port is 5005, and the default HTTPS port is 5006.
• Use HTTPS for normal WebDAV access. Windows blocks unencrypted WebDAV authentication by default.
• Windows, macOS, and Linux can connect through their respective file managers.
• Folder permissions determine whether an account can view or modify files.
• SMB is usually the better choice for routine local access and large file transfers.
• Windows File Explorer’s built-in WebDAV client cannot transfer a single file of approximately 4 GiB or larger.
• WebDAV provides live file access; it does not create a backup or synchronized offline copy.

Should You Use WebDAV or SMB on UGREEN NAS?

Both protocols can make UGREEN NAS folders accessible from a computer, but they serve different workflows.

For most Windows and macOS users accessing files at home or in an office, SMB is the simpler and more efficient choice. Follow the UGREEN NAS SMB and shared-folder guide if you only want to add the NAS to File Explorer or Finder.

Use WebDAV when a computer, application, backup tool, or cross-network workflow specifically requires the WebDAV protocol.

How Do You Enable WebDAV on UGREEN NAS?

Before enabling the service, prepare a NAS account and confirm which folders it should be allowed to access.

For a shared folder:

1. Open Files.
2. Select Shared Folder.
3. Open the target folder’s properties.
4. Give the account read-only or read/write permission based on its intended use.

1. Enable the WebDAV service

Sign in to UGOS Pro and open:

Control Panel > File Service > WebDAV

Select Enable Service, and then click Apply.

2. Review the WebDAV ports

The default ports are:

Use HTTPS port 5006 for normal access. HTTP port 5005 sends traffic without transport encryption and is rejected by the Windows WebDAV client under its default security settings.

If another service already uses either port, open Advanced Settings and assign a different available port. Use the new port in every WebDAV address and firewall rule.

3. Configure the advanced settings

WebDAV Advanced Settings can be used to:

• Enable or disable HTTP and HTTPS separately.
• Change the HTTP and HTTPS port numbers.
• Remove the 1024-character WebDAV path-length limit.
• Enable WebDAV transfer logging.

Enable Remove 1024-Character Path Length Limit if your folders contain deeply nested directories or long filenames.

After changing the settings, save them and click Apply.

4. Find the NAS IP address

Open:

Control Panel > Network > Network Connection

Find the active network interface and record its local IP address, such as 192.168.1.100.

The default WebDAV addresses are:

http://NAS_IP:5005
https://NAS_IP:5006

For example:

https://192.168.1.100:5006

To connect directly to a particular shared folder, append its name:

https://192.168.1.100:5006/Documents

Folder names and paths are case-sensitive. A folder named Documents should be entered as /Documents, not /documents.

5. Choose how to handle the HTTPS certificate

Certificates are managed under:

Control Panel > Security > Certificates

If you import a certificate, open Configuration and assign it to the service used for the HTTPS connection.

The hostname in the WebDAV address should match the hostname covered by the certificate. For example, a certificate issued for nas.example.com may be rejected when the client connects through https://192.168.1.100:5006.

For local access, choose one of these approaches:

• Use SMB locally: This is the simplest option when you only need routine File Explorer or Finder access.
• Use a matching hostname: Configure a stable hostname that resolves to the NAS’s local IP address, install a certificate covering that hostname, and connect through the hostname. Local resolution can be provided by your router, a local DNS server, or a hosts-file entry.
• Trust the NAS certificate on the computer: If WebDAV is required and you use the default UGREEN certificate, explicitly trust that certificate on each client after verifying that it came from your NAS.

For the most predictable local experience, use SMB. If an application specifically requires WebDAV, configure certificate trust or a matching hostname rather than relying on repeated certificate warnings.

How Do You Connect to UGREEN NAS WebDAV on Windows?

Make sure the Windows computer and NAS are connected to the same local network for the initial setup.

1. Press Win + E to open File Explorer.
2. Select This PC.
3. Open the three-dot menu and select Map network drive.
4. Choose a drive letter.
5. Enter the HTTPS WebDAV address in the Folder field:

https://NAS_IP:5006

To mount a particular folder, include its exact name:

https://NAS_IP:5006/SharedFolder

6. Select Reconnect at sign-in if Windows should retain the connection.
7. Click Finish.
8. Enter the username and password of the NAS account with access to that folder.
9. Open the mapped drive under This PC and test it by creating or editing a small file.

Windows normally accepts WebDAV Basic authentication only over HTTPS. If an HTTP address such as http://NAS_IP:5005 fails, use the HTTPS address instead of weakening the Windows authentication policy.

How Do You Connect to UGREEN NAS WebDAV on macOS?

Make sure the Mac and NAS are connected to the same local network.

1. Open Finder.
2. Select Go > Connect to Server, or press Command + K.
3. Enter the HTTPS WebDAV address:

https://NAS_IP:5006

You can also specify a shared folder:

https://NAS_IP:5006/SharedFolder

4. Click Connect.
5. Enter the username and password of the NAS account.
6. Select the folder you want to access if prompted.

After the connection, the WebDAV server appears under Locations in the Finder sidebar.

To disconnect, select the eject button beside the server. If the Mac’s network configuration changes while it is connected, disconnect and reconnect to refresh the WebDAV session.

If macOS rejects the certificate, use a hostname covered by the certificate or verify and trust the NAS certificate through Keychain Access. SMB remains the simpler option for ordinary local file access.

How Do You Connect to UGREEN NAS WebDAV on Linux?

Linux desktop environments commonly support WebDAV without requiring a UGREEN NAS desktop client.

Connect through GNOME Files

1. Open Files.
2. Select Other Locations.
3. Find Connect to Server.
4. Enter the secure WebDAV address:

davs://NAS_IP:5006/SharedFolder

5. Select Connect.
6. Enter the NAS username and password when prompted.

The connected folder then appears in the Files sidebar.

Connect through KDE Dolphin

1. Open Dolphin.
2. Select Network.
3. Choose Add Network Folder.
4. Select WebFolder (webdav).
5. Enter the NAS IP address or hostname.
6. Enter port 5006.
7. Enter the shared-folder path and NAS username.
8. Enable the encrypted connection option.
9. Complete the wizard and enter the password when prompted.

Linux users who need a persistent filesystem mount can use davfs2. Package installation, certificate storage, credential files, and automatic mounting differ between Linux distributions, so follow the documentation provided for your distribution.

How Do You Access UGREEN NAS WebDAV Outside Your Home Network?

A local address such as 192.168.1.100 only works while the computer is connected to the same network as the NAS.

A generic WebDAV client outside the local network needs:

• A public IP address or DDNS hostname that reaches the NAS network.
• Router port forwarding to the NAS WebDAV HTTPS port.
• HTTPS enabled in WebDAV.
• A certificate that matches the hostname used by the client.
• A NAS account with access only to the required folders.

For example:

https://nas.example.com:5006/Documents

If you changed the external or internal HTTPS port, use the port assigned in your router and WebDAV settings.

Forward only the HTTPS port required for WebDAV. Keep unencrypted HTTP port 5005 unavailable from the public internet.

UGREENlink is the simpler option when you only need remote browser, UGREEN NAS app, or desktop-client access. A generic WebDAV client instead requires a directly reachable WebDAV hostname or public IP configuration.

See the UGREEN NAS remote-access guide for UGREENlink and DDNS setup.

How Do You Fix UGREEN NAS WebDAV Errors?

Start with the symptom shown by the computer or WebDAV client.

Why does Windows show error 0x80070043?

Check these items in order:

1. Confirm that WebDAV is enabled under Control Panel > File Service > WebDAV.
2. Confirm that you clicked Apply after changing the settings.
3. Use the HTTPS address and correct port:

https://NAS_IP:5006

4. Confirm that the computer and NAS are on the same network when using a local IP address.
5. Press Win + R, enter services.msc, and open the Services application.
6. Find WebClient.
7. If the service is stopped, set its startup type to Automatic and start it. If it is already running, restart it.
8. Check whether Windows Firewall or another network firewall is blocking the configured WebDAV port.

Why can you connect but not edit or save files?

Open Files > Shared Folder, view the folder’s properties, and confirm that the WebDAV account has read/write permission.

Also verify that:

• The WebDAV path points to the intended folder.
• The folder name uses the correct capitalization.
• The selected client supports writing rather than read-only browsing.
• The NAS storage pool has available capacity.
• The file is not locked by another application or user.

After changing permissions, disconnect and reconnect the WebDAV drive so the client starts a new authenticated session.

Why do files larger than 50 MB fail on Windows?

The Windows WebClient service has a default FileSizeLimitInBytes value of 50,000,000 bytes. A larger transfer can therefore fail even when the NAS, account, and network are working correctly.

To raise the Windows limit:

1. Create a Windows restore point or back up the relevant registry setting.
2. Press Win + R, enter regedit, and press Enter.
3. Go to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters

4. Find FileSizeLimitInBytes.
5. Open the value and select Decimal.
6. Enter a limit larger than the files you need to transfer. For example, 1073741824 allows a file size of approximately 1 GiB.
7. Save the change.
8. Open services.msc and restart the WebClient service.
9. Reconnect the mapped WebDAV drive and test the transfer again.

FileSizeLimitInBytes is a DWORD value. Its maximum is 4,294,967,295 bytes, one byte below 4 GiB. Files around 4 GiB or larger therefore cannot be transferred through Windows File Explorer’s built-in WebDAV mapping even after the limit is increased.

This ceiling belongs to the Windows WebClient, not the UGREEN NAS WebDAV service. Use SMB or another suitable transfer method for larger files.

Registry changes affect Windows system behavior. Change only the named value and preserve the previous setting in case it needs to be restored.

Why does HTTPS produce a certificate error?

A certificate error normally means one of the following:

• The certificate is not trusted by the computer.
• The certificate has expired.
• The certificate was issued for a different hostname.
• The connection uses an IP address while the certificate covers a domain name.

For routine local access, switching to SMB avoids the WebDAV certificate requirement.

If WebDAV is required, choose one of these fixes:

• Connect through a hostname covered by the installed certificate.
• Configure local DNS or a hosts-file entry so that hostname resolves to the NAS’s local IP.
• Verify and trust the NAS certificate on the computer.
• Import a suitable certificate under Control Panel > Security > Certificates and assign it under Configuration.

Using the matching hostname is preferable to repeatedly bypassing certificate warnings.

Why do long paths fail?

Open:

Control Panel > File Service > WebDAV > Advanced Settings

Enable Remove 1024-Character Path Length Limit, save the setting, and click Apply.

The computer and individual applications may still enforce their own filename or path limits, so test the affected path again after reconnecting.

How do you check WebDAV logs?

First enable WebDAV logging in its Advanced Settings. Then open:

Log Center > Logs > Current Logs

Change the log type from Event Log to Transfer Log.

Use the log to check:

• Login failures
• Permission errors
• Rejected file operations
• Interrupted transfers
• The time and account associated with an access attempt

Why is WebDAV slow?

Test the same file and folder through SMB on the same computer and network.

If SMB is substantially faster, use SMB for frequent local access and large transfers. WebDAV remains useful for applications and cross-network workflows that specifically require it.

Also check:

• Whether the computer is using Wi-Fi or wired Ethernet.
• Whether the NAS is running backups, media transcoding, containers, or other storage-heavy tasks.
• Whether remote upload or download bandwidth is limiting the connection.
• Whether the slowdown affects one WebDAV client or every client.

For broader network checks, follow the UGREEN NAS transfer-speed troubleshooting guide.