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Paul_VC's avatar
Paul_VC
Steel Contributor
May 20, 2021

How can I set Edge-browser as PDF-file previewer in Outlook Desktop?

Microsoft Edge is set as the default PDF-handler application in Windows 10 on my pc. However, in Outlook Desktop, when I click on PDF-files which are attached to a mail message, I get an error mes...
Edge
outlook
PDF
preview
  • Nuntius's avatar
    Nuntius
    Dec 07, 2021

    Paul_VC 

     

    I wanted the same thing, not needing additional software for the pdf preview in outlook.

    Wanting to use edge. However this seems not possible.

    I've now found out that when you install Microsoft Power Toys you get a number of cool tools, including a pdf previewer that works in outlook.  It is additional software, but at least you don't have to install a separate pdf viewer.

janv30's avatar
janv30
Copper Contributor
May 18, 2023

Paul_VC 

Recently had the same problem

Open regedit

Computer\HKEY_CLASSES_ROOT\.pdf\shellex

Computer\HKEY_CLASSES_ROOT\.pdf\shellex\{8895b1c6-b41f-4c1c-a562-0d564250836f}

For me this one contained {DC6EFB56-9CFA-464D-8880-44885D7DC193}=> this is adobe PDF preview

Change the value to {3A84F9C2-6164-485C-A7D9-4B27F8AC009E} => this is MS Edge PDF preview

 

You can check both keys under

  • Computer\HKEY_CLASSES_ROOT\CLSID\{DC6EFB56-9CFA-464D-8880-44885D7DC193} - Adobe
  • Computer\HKEY_CLASSES_ROOT\CLSID\{3A84F9C2-6164-485C-A7D9-4B27F8AC009E} - Edge

 

 

 

 

  • Seb7a's avatar
    Seb7a
    Copper Contributor
    Sep 25, 2024

    Thank you janv30! This is the best answer. In my case, PDF previews were working fine in Outlook until IT forceably installed Adobe Acrobat Reader and then it broke. By changing the registry like you specify, I was able to fix it.

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