Your client does not support opening this list with Windows Explorer

we are very much familiar with this error message and know what exactly needs to be done if such issue occurs. But this issue varies if operating system changes from XP to Windows Vista.

 FYI- This is a known issue with windows vista OS and we have a Microsoft KB for this: http://support.microsoft.com/kb/841215

 Before we can go ahead and conclude on to above mentioned KB, make sure to check the following points:

 1)    Web client service should be started

2)    You can also get the error if the URL to the document library is 100 characters long

3)    If you are using Internet Explorer 6 you will get the error. You know it’s time to upgrade

 It would be a good question as What exactly this KB suggest ?

 Please refer the following info:

         Click Start

        type regedit.exe in the Start Search box

        Locate and expand the list and navigate to the following location

• HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WebClient\Parameter

        Locate the value BasicAuthLevel

• Right click the value and choose Modify.


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

        Exit Registry Editor, and then restart the computer.

 Note: We will not do any kind of changes inside the registry so this should be done with the help of Desktop Support Team

 If it’s a Windows Server 2008 OS then please check the following:

        Open up the Windows Server Manager.

        Click Features in the left hand menu

        Click Add Features, in the main window.

        Select the Desktop Experience feature, and then click Next.

        Click Install.

        Click Close when the Add Features wizard is done.

        Choose to reboot when done.

 If it’s a Windows Server 2003 OS then please check the following:

 Download and install the Microsoft Hotfix

Windows Office needs a Web Client update to work properly with WebDAV.