is HP printer connected to that PC ? have it installed the full version of HP Drivers ? if yes, then you should try this.. its known issue discussed in ms knowledge base. Hewlett-Packard's Share-to-Web software. The MS06-015 (908531) (http://www.microsoft.com/technet/security/bulletin/ms06-015.mspx) security update includes a "white list"; VERCLSID.EXE will not scan any extension that appears on this list. Adding the HP shell extension corrects the problem. Manually edit the registry:1. Log on to the computer with an account with administrator privileges. 2. Click the Start button and then click Run. 3. Type Regedit and then click OK. 4. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached 5. Right-click "Cached", point to New, click "DWORD Value", and then enter: {A4DF5659-0801-4A60-9607-1C48695EFDA9} {000214E6-0000-0000-C000-000000000046} 0x401 6. Set the Data of this value to 1 7. Close the Registry Editor. 8. Use Task Manager to end the Verclsid.exe process or restart the computer.