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http://support.microsoft.com/kb/918165Log on to the computer by using an account that has administrative credentials.
2. Click Start, click Run, type regedit, and then click OK.
3. Locate and then right-click the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached
4. Point to New, and then click DWORD Value.
For Microsoft Windows XP-based or Microsoft Windows Server 2003-based computers, type the following:
{A4DF5659-0801-4A60-9607-1C48695EFDA9} {000214E6-0000-0000-C000-000000000046} 0x401
6. Right-click the value that you just created, and then set the Value data to 1.
7. Exit Registry Editor.
8. Use Task Manager to close the Verclsid.exe program or to restart the computer.
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