Fix for Adobe PDF preview handler on 64-bit Windows

The following issue happens when you try to preview a PDF in Outlook 2007-2010 only on Windows 64 bit editions. Here’s a rootcause of the issue and its fix: To enable preview of PDF files in 64-bit OSs, do following: Start Registry Editor (Start - Run - Regedit.exe) Move to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{DC6EFB56-9CFA-464D-8880-44885D7DC193} Change AppID value to […]

The following issue happens when you try to preview a PDF in Outlook 2007-2010 only on Windows 64 bit editions. Here’s a rootcause of the issue and its fix:

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

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

Or create a Reg file:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{DC6EFB56-9CFA-464D-8880-44885D7DC193}]
"AppID"="{534A1E02-D58F-44f0-B58B-36CBED287C7C}"