If you run a 64-bit version of Windows and find that you are unable to preview Adobe Acrobat files you’ll be relieved to learn there’s now a fix available from pretentiousname.com. The tool also works for 64-bit versions of Microsoft Office 2010 and fixes some erroneous registry entries.
So, stop waiting for Adobe to fix their own software, and restore your Acrobat previews to their former glory! Get the fix here.
Huge thanks to Leo Davidson for his fine work!