Some security updates have turned off some previews since this turned out to be a security risk. .DOC .HTM and others will never preview again.
Other items can be the missing registry key often removed by uninstall of software or a registry cleaner as noted at http://support.microsoft.com/?id=192573
Bob
I am operating Windows 2000 and I used to see thumbnails of pics on the right side of Windows Explorer when I highlited each file. I no longer see these thumbnails and I wonder what happened to them. How do I bring that feature back?

Chowhound
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GameSpot
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