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How to Change the Default PDF Viewer in Outlook?

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Are you tired of opening PDF attachments in Outlook with the default PDF viewer? Do you prefer using a different PDF viewer software for your work? In this article, we will guide you through changing the default PDF viewer in Outlook to suit your needs.


 Why Change the Default PDF Viewer?


Outlook is a widely used email client that allows users to manage their emails, calendars, and attachments efficiently. By default, Outlook uses its built-in PDF viewer to open PDF attachments. However, your preferences or requirements may make you want to use a different PDF viewer. You may need advanced annotation tools, better rendering quality, or particular features from another PDF viewer. Whatever the reason, changing the default PDF viewer can enhance your productivity and improve your overall experience with Outlook.

Change the Default PDF Viewer in Outlook

Steps to Change the Default PDF Viewer in Outlook


1. Install Your Preferred PDF Viewer:

Before changing the default PDF viewer in Outlook, ensure your preferred PDF viewer software is installed on your computer. There are various options, such as Adobe Acrobat Reader, Foxit Reader, and Nitro PDF Reader. Please choose the one that best suits your needs and install it following the software’s instructions.


  1. Access Default Apps Settings:

    To change the default PDF viewer, you need to access the Default Apps settings on your computer. Here’s how:

  • Windows: Go to the Start menu, click on the gear icon to open Settings, then navigate to “Apps” > “Default Apps.”
  • Mac: Click on the Apple menu, select “System Preferences,” then go to “General” > “Default web browser.”


  1. Change the Default PDF Viewer:

    Once you are in the Default Apps settings, follow these steps:

  • Windows: Click “Choose default apps by file type.” Look for the “.pdf” extension and click on the current default app (e.g., Microsoft Edge). A list of available apps will be displayed. Choose your preferred PDF viewer from the list.
  • Mac: In the “Default web browser” section, click on the current default app (e.g., Safari). A drop-down menu will appear. Choose your preferred PDF viewer from the list.

How to change the default pdf viewer in outlook 365

4.Confirm the Change:

After selecting your preferred PDF viewer, close the Settings window. Your new default PDF viewer is now set for Outlook. The next time you open a PDF attachment, it should automatically launch with your chosen PDF viewer.


Additional Tips for Changing the Default PDF Viewer in Outlook


Now that you have learned the basic steps to change the default PDF viewer in Outlook, here are some additional tips to further customize your experience:


  • Explore Advanced Features
  • Customize PDF Viewer Settings
  • Keep Your PDF Viewer Updated
  • Consider Browser-based PDF Viewers
  • Troubleshooting:

If you encounter any issues after changing the default PDF viewer in Outlook, there are a few troubleshooting steps you can try:

– Ensure that your chosen PDF viewer is properly installed and up to date.

– Verify that the file association for PDF files is correctly set to your preferred PDF viewer.

– Restart your computer and relaunch Outlook to ensure the changes take effect.

– If the issue persists, you can revert to the default PDF viewer in Outlook and seek further assistance from the support resources provided by your chosen PDF viewer software.

By following these tips, you can maximize the benefits of changing the default PDF viewer in Outlook and optimize your PDF viewing experience within the email client.


What causes Outlook to be unable to open PDF files?

Occasionally, certain file types may be restricted across all Office programs, and this restriction could extend to PDF files. To investigate, navigate to File → Options → Trust Center and access “Trust Center Settings”. Go to the “File Block Settings” tab and verify whether the PDF file type is listed as restricted.


What causes Outlook to open PDFs in Chrome?

This commonly occurs when Chrome’s PDF viewer is set as the default for opening downloaded files. To address this, it’s necessary to deactivate the PDF viewer, ensuring that PDFs open in dedicated reader software instead of Chrome. By default, the setting is configured to “Open PDFs in Chrome”; opt for the “Download PDFs” option to make the necessary adjustment.


Is it possible for Outlook to display PDF files?

Previewing PDFs in Outlook is achievable through the following method.

For users with older versions of Outlook, the installation of a third-party previewer such as Foxit is necessary. Foxit, a free PDF editor, facilitates convenient previewing of PDFs directly within Outlook. To utilize this feature, download and install Foxit, and subsequently open the PDF attachment directly from Outlook.

How to Convert Emails to PDF in Outlook on Windows 10

How do I change my default PDF viewer in Outlook 365, and how to change default PDF viewer in Outlook are common queries.

New Outlook default PDF viewer settings can be adjusted based on your preferences. Explore the Outlook settings to configure a default PDF viewer that suits your needs.

Change Outlook default PDF viewer easily by navigating through Outlook settings. Locate the default apps or file association settings to set your preferred PDF viewer for Outlook attachments.

If you are using Outlook 365, follow these steps:

  1. Open Outlook and locate the email you want to convert.
  2. Click on the email to select it.
  3. Go to File > Print.
  4. In the Printer drop-down menu, choose “Microsoft Print to PDF.”
  5. Click Print, then specify a folder and title for the new PDF.
  6. Press Save to save the PDF to your computer.



Changing the default PDF viewer in Outlook allows you to use your preferred software for viewing and working with PDF attachments. Following the simple steps outlined in this article, you can customize your Outlook experience to align with your needs and requirements. Remember to install your preferred PDF viewer before making the change, and enjoy a seamless and efficient workflow within Outlook.

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Take action now and enhance your productivity by changing the default PDF viewer in Outlook!

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