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WebDAV means Web-based Distributed Authoring and Versioning. It is a set of extensions to the HTTP protocol which allows users to collaboratively edit and manage files on remote web servers. It was defined in rfc4918 and evolved to a de-facto standard. Files (or folders) stored in the cloud can be accessed via WebDAV. WebDAV access is not available if you are syncing folders between clients only. Many operating systems come with built-in WebDAV support and allow to upload, access and explore files stored in the cloud without the client or any additional software installed.

Understanding WebDAV Security

To access folders via WebDAV it is required to authenticate with login to the cloud. In case of the cloud it's the email you've registered / purchased with and the password you have set in the past.

Other users require at least read permission on the folder for access, otherwise the access will be blocked.

On all WebDAV traffic will be SSL-encrypted.


Table of Contents


Troubleshooting WebDAV on Windows

  • (warning) (warning) Currently there is a are known bug bugs in Microsofts WebDav client:
    • The files that get uploaded via WebDAV are first stored at "%systemdrive%\windows\ServiceProfiles\LocalService\AppData\Local\Temp\TfsStore\" If the Systemdrive is full no upload is possible.
    • The WebDAV client has a bug that those files aren't deleted automatically after the upload was successfull. Windows Support Articel
    • When the connection to a server address fails the Microsofts WebDAV client won't try this connection again. You can solve this problem by restarting the service WebClient.
  • Currently there is a known problem with Word 2010. Word 2010 will crash if a file is opened from a WebDAV mount. As we can't solve that problem, you need to upgrade to a more recent version of Word (at least Word 2013).
  • Windows Server 2012 and above requires the Desktop Experience feature (Server Manager > Add Roles and Features > Features > User Interfaces and Infrastructure > Desktop Experienceto be installed, before WebDAV shares can be mounted locally. Furthermore you have to go to the Windows Services management, start the WebClient service and set it to Automatic, so it starts automatically in the future as well.
  • The built-in Windows client might crash occasionally. In that case it might help to restart the Windows service WebClient under Control Panel > Administrative Tools > Services
  • The built-in Windows client might be very slow. In that case please disable the automatic proxy detection in the Internet Explorer. You can find that setting in the Internet Explorer's Internet Options > Connections > LAN Settings > Automatically detect settings.
  • The built-in Windows client might repeatedly ask your for your credentials. In that case you might need to enable Basic Authentication:

    titleEnable basic authentication for the Microsoft Windows Mini-Redirector component by modifying a key in the Windows registry

    Windows 7, Windows 8, Windows 10, Windows Server 2008 R2 Windows Server 2012 (R2), Windows Server 2016

    1. Click Start and type regedit in the Start Search box, and then click regedit.exe in the programs list.
    2. Browse to the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters key.
    3. Find a DWORD/REG_DWORD entry named BasicAuthLevel.
    4. In the Value data box, type 2, and then click OK.

    5. Restart your computer