How To Get PDF Preview Function to Work in 64-bit Version of Windows 7 with Outlook

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image44 - How To Get PDF Preview Function to Work in 64-bit Version of Windows 7 with Outlook

If you use Outlook in Windows 7 64-bit edition, you may be getting “PDF Preview Handler for Vista” error message when trying to preview PDF attachment right from Outlook. You are still able to open the PDF file by double-clicking it but you just can’t preview it.

If that’s the case, try this:

1. Start Registry Editor.

2. Navigate to HKLM\SOFTWARE\Wow6432Node\Classes\CLSID\{DC6EFB56-9CFA-464D-8880-44885D7DC193}

3. Change the AppID to {534A1E02-D58F-44f0-B58B-36CBED287C7C}

The change takes effect immediately but you might need to close your Outlook and re-open it to make it work.

So what is this {534A1E02-D58F-44f0-B58B-36CBED287C7C} referring to?

It’s the CLSID for 32-bit Preview Handler Surrogate Host that points to

%systemroot%\SysWOW64\prevhost.exe

Another words, it’s a preview handler host used in 64-bit edition to emulate the same function on 32-bit.

Hopefully, it works for you.

8 COMMENTS

    • I don't have Foxit reader on my computer to test it out but presumably, you can modify the registry to point to the foxit reader preview handler dll.

      Or, maybe you can just copy over the dll from other computer that has adobe reader installed.

      Cheers.

  1. I already have this registry setting. but still can preview or open pdfs in outlook. I have to save file to disk for security reasons, but security is already setup to allow files to be opened.

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