WebDAV and Folder is Invalid Errors

When trying to access a folder in WebCT Vista using the WebDAV client in Microsoft Windows 2000 or XP, some users have reported getting an error message saying that the "folder is invalid".

This can be caused by some Microsoft Windows WebDAV clients that encode the path that the user enters, including changing the plus sign (+) to %2B. These WebDAV clients may have been updated by installing Microsoft Office XP/2003. The original WebDAV client that shipped with Windows 2000 and XP does not encode the plus sign (+) in the path, so it works with WebDAV paths in WebCT Vista.

On the affected client computer, re-install the original WebDAV client for Microsoft Windows.

1. Find the file: webfldrs.msi
The location of the file depends on the version of Windows that you are using.

For example, on Microsoft Windows XP:
- This file is normally found under \WINDOWS\SYSTEM32\webfldrs.msi
- If you installed Windows XP Servicepack 1 you will find it under \WINDOWS\ServicePackFiles\i386\webfldrs.msi

For example, on Microsoft Windows 2000:
- This file is normally found under \WINNT\system32\webfldrs.msi

2. To start the installation, double-click webfldrs.msi

3. Click "Select reinstall mode".

4. Uncheck "Repair all detected reinstall problems".
Check "Force all files to be reinstalled, regardless of checksum or version".
Check "Verify that required user registry entries are present".
Check "Verify that required machine registry entries are present".
Check "Validate shortcuts".

5. Click OK and REINSTALL.

6. Reboot your computer.