There was a problem connecting to the Web Disk service. Please make sure ports 2078 (SSL) and 2077 are not firewalled.

This is the best I have come up with for Cpanel WebDav in Vista:

# Click on the Start Menu

# Right-click on Computer, then click on "Map Network Drive..."

# A "Map Network Drive" dialog will appear

# Towards the bottom of this box there is a link that says "Connect to a Web site that you can use to store your documents and pictures, and then click Next."

# The "Add Network Location" Wizard will pop up, click "next"

# On the following screen click "Choose a custom network location" and click "Next"

# Enter http://domain.tld:2077 (use https://domain.tld:2078 for SSL. This didn't work well although I did get it to connect eventually)

# Enter your full username and password and click "OK" (you may have to do this multiple times with SSL)

# Enter a name for the share in "What do you want to name this location" then click "next"

# Click on "Finish" on the last screen.

# The WebDav share should now show up under "My Computer"

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in Windows

To work around this behavior, enable Basic authentication on the client computer. To do this, add the

BasicAuthLevel

registry entry to the following registry subkey, and then set the entry to a value of 2 or more:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters

To enable Basic authentication on the client computer, follow these steps:

1.         Click Start

, type regedit in the Start Search box, and then click regedit.exe in the Programs list.

2.         Locate and then click the following registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameters

3.         On the Edit menu, point to New, and then click DWORD Value.

4.         Type BasicAuthLevel, and then press ENTER.

5.         On the Edit menu, click Modify.

6.         In the Value data box, type 2, and then click OK.

Note The mapping is as follows:

o          0 - Basic authentication disabled

o          1 - Basic authentication enabled for SSL shares only

o          2 or greater - Basic authentication enabled for SSL shares and for non-SSL shares

7.         Exit Registry Editor, and then restart the computer.

WebDAV is an extension of Hypertext Transfer Protocol   (HTTP), and includes the use of Basic authentication. Basic authentication is   one form of user authentication where a user is identified to the server. When   the server is configured to use Basic authentication, the client computer   transmits the users' credentials to the server. If the channel is not   encrypted, such as in typical HTTP traffic, a malicious user on another   computer on the network can possibly intercept the user name and password of   that user. Since a user's credentials can be possibly compromised if they are sent in clear text, Windows Vista and Windows XP SP2 include functionality that permits you to control the use of Basic authentication by the DAV redirector. The DAV redirector prior to Windows Vista does not support encrypted HTTP, such as HTTPS or Secure Sockets Layer (SSL) resulting in the transmission of the users' credentials without encryption if the server supports Basic authentication. Beginning with Windows Vista the DAV redirector supports SSL and by default disables the use of Basic authentication without SSL enabled. By default, Basic   authentication is disabled in Windows Vista and in  Windows XP SP2. When Basic authentication is   disabled, either the client computer uses a different authentication method (if   the server supports a different authentication method), or the request fails.   For more information about Windows SharePoint Services 3.0, visit the   following Microsoft Web site:

For more information about Windows SharePoint Services 2.0, visit the   following Microsoft Web site: