Q. My PDF files don't preview correctly under 64-bit versions of Windows. How do I fix this?

A. To enable the preview of PDF files in 64-bit OSs, do the following:

1. Start the Registry Editor (Start, Run, Regedit.exe).
2. Move to HKLM\SOFTWARE\Wow6432Node\Classes\CLSID\\{DC6EFB56-9CFA-464D-8880-44885D7DC193\}.
3. Change the AppID value to \{534A1E02-D58F-44f0-B58B-36CBED287C7C\}.
4. Reboot.

Related Reading:

• Q. Are there any password auditing programs that work on 64-bit versions of Windows?
• Q. Why are 64-bit domain controllers (DCs) better than 32-bit DCs?
• Q. Do I have to use the 64-bit version of Windows Preinstallation Environment (WinPE) to capture or deploy a 64-bit version of Windows, and the 32-bit version of WinPE to work with 32-bit versions?
• Q. Does Hyper-V support 64-bit guests?

Check out hundreds more useful Q&As like this in John Savill's FAQ for Windows. Also, watch instructional videos made by John at ITTV.net.