To resolve this issue, complete one of the following options:
Disable the Prevent access to drives from My Computer policy.
Refer to Microsoft Technet – Prevent access to drives from MyComputer
Reassign the users’ profile to a different location that is not restricted.
Refer to How to customize the default local user profile when you prepare an image of Windows XP or Windows Server 2003 and How to Set the Path for the Local Default User Profile.
If Special Folder Redirection is not required, change the settings in the Web Interface Site preferences under Manage Session Preferences > Local Resources > Provide Special Folder Redirection to all users and Allow users to customize Special Folder Redirection.
Note:It has been reported that If seeing this issue after clicking links in Outlook it may be corrected by simply resetting your default prefered browser from Internet Explorer to Chrome or FireFox and then back to Internet Explorer again.