Outlook 365 PDF Preview handler not working

[iorx]

Hi,

Running Windows 10 x64 and Office 365 32bit. Is this why I don't get the PDF-preview function to work within Outlook? I get the message "no preview handler installed"

If registered as preview handler (File/Options/Trust Center/Attachment Handling/). What name does the handler get here?

 

[iorx]

Hi again, talking to myself here.

Got it to show up in my 32bit Office with this "hack". I'm not sure what I'm doing here. Found an article about how to get A*obe preview to work if it didn't, it was that it was missing the below information.

After inserting this into the registry "PDF24" shows up as handler in the list but preview still show the same error.

Is this totally wrong to try?

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{09E6D117-5330-4A29-8C20-0C3AF9F90A1C}]
@="PDF24 PDF Preview Handler"
"AppID"="{344F65BE-B425-4180-8F60-3E44B637029F}"
"DisableLowILProcessIsolation"=dword:00000000
"DisplayName"="PDF24"

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Classes\CLSID\{09E6D117-5330-4A29-8C20-0C3AF9F90A1C}\InprocServer32]
@="C:\\Program Files\\PDF24\\PdfPreviewHandler.dll"
"ThreadingModel"="Apartment"

[iorx]

Me again!

Gave up on the registry hack above and removed it.

I upgraded my Office 365 to x64. Did a repair install of PDF24 but still doesn't have a working preview of PDF.

The entry "PDF24" is now present in the list under File/Options/Trust Center/Attachment Handling/ and is checked as active.

Any ideas how to make preview work?

[iorx]

Hi again,

Is this the wrong place asking questions? Anyone here? 🙂

[iorx]

Hi, me again!

Anyone here or am I doing something wrong? The lack of response makes me wonder.

Brgs,

[iorx]

I think I've solved it.

Something was missing in the registration of preview handler (this goes for Explorer and Outlook).

So inserting this (and in Outlook enable the preview handler) it started working. Default value under this key, HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.pdf\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f},  should be {09E6D117-5330-4A29-8C20-0C3AF9F90A1C}

Reg export:

[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.pdf\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}]
@="{09E6D117-5330-4A29-8C20-0C3AF9F90A1C}"

[madduck]

Hey, hope it's okay for me to come to this old post.

I made the 3 changes to the registry in Windows 11, as suggested here. However, the preview window is empty:

Any idea how I can get this working in Windows Explorer?

[PDF24 Support]

Hello,

sorry that this thread remained unanswered for so long.

The registry changes described in this thread are no longer needed. The PDF24 installer registers the preview handler for File Explorer and Outlook itself. It is used when PDF24 Reader is the default app for PDF files in Windows, which is the case on your PC according to your screenshot (file type "PDF24 Reader").

Version 11.31.0 improved the preview handler: the preview no longer blocks File Explorer while loading, and it now also works with the 32-bit version of PDF24 and in 32-bit applications such as 32-bit Office. The next version contains further fixes for the preview handler.

So please install the current version of PDF24 Creator: https://tools.pdf24.org/en/creator

If the preview pane still stays empty after that, please tell us your PDF24 Creator version and your Windows version, and whether this happens with every PDF file or only with some.

[Author]

Posts