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Outlook 365 PDF Previewer Error Fix – Windows 10

In my experience, fixing the Outlook 365 PDF Previewer error in Windows 10 can be a frustrating process.

Installing a PDF Previewer

To install a PDF Previewer in Outlook 365 on Windows 10, follow these steps:

1. Open the Microsoft Store on your Windows 10 computer.
2. Search for “PDF Previewer” in the search bar.
3. Find a PDF Previewer app that is compatible with Outlook 365 and click on it to open the app page.
4. Click on the “Install” button to download and install the PDF Previewer app on your computer.
5. Once the installation is complete, open Outlook 365 and go to the settings.
6. Look for the option to set the default PDF Previewer and select the newly installed app.
7. Restart Outlook 365 to apply the changes and start previewing PDF files directly within the application.

Configuring File Attachment Settings

Step Description
1 Open Outlook 365 on your Windows 10 computer
2 Click on the “File” tab in the top left corner of the screen
3 Click on “Options” in the left sidebar menu
4 Click on “Trust Center” in the options menu
5 Click on “Trust Center Settings” button
6 Click on “Attachment Handling” under Trust Center settings
7 Check or uncheck the options under “Attachment Handling” based on your preference
8 Click “OK” to save your changes

Troubleshooting Common Preview Issues

  • Check PDF file compatibility:
    • Ensure the PDF file is not corrupted or encrypted.
    • Try opening the PDF file in a different PDF viewer to see if the issue persists.
  • Update Adobe Acrobat Reader:
    • Make sure you have the latest version of Adobe Acrobat Reader installed on your computer.
    • Check for updates in the Adobe Acrobat Reader program and install any available updates.
  • Set Adobe Acrobat Reader as default PDF viewer:
    • Right-click on a PDF file on your computer.
    • Select “Open with” and choose Adobe Acrobat Reader from the list.
    • Check the box that says “Always use this app to open .pdf files” and click OK.
  • Check Outlook 365 settings:
    • Open Outlook 365 and go to File > Options.
    • Click on Trust Center, then Trust Center settings.
    • Under File Block Settings, make sure that PDF files are not blocked.
  • Repair Microsoft Office:
    • Open Control Panel and go to Programs > Programs and Features.
    • Find Microsoft Office in the list of installed programs, right-click on it, and select Repair.
    • Follow the on-screen instructions to repair Microsoft Office.

Enhancing Email Attachment Security

To enhance email attachment security in Outlook 365 on Windows 10, follow these steps:

1. Update Outlook 365: Make sure you have the latest updates installed for Outlook 365 to ensure any security vulnerabilities are patched.

2. Enable Attachment Previewer: Go to File > Options > Trust Center > Trust Center Settings > Attachment Handling and make sure “Turn off Attachment Preview” is unchecked.

3. Use Protected View: Enable Protected View for attachments by going to File > Options > Trust Center > Trust Center Settings > Protected View and checking the box for “Enable Protected View for Outlook attachments”.

F.A.Q.

How do I enable PDF preview in Outlook 365?

To enable PDF preview in Outlook 365, you need to close Outlook, download and install Adobe Acrobat Reader, set it as the default program for opening PDF files, and then restart Outlook. This should allow you to preview PDF files within Outlook.

Why is my PDF preview handler not previewed in Outlook?

Your PDF preview handler may not be previewed in Outlook due to issues such as missing, corrupted, or improperly registered handlers, or problems with the installed PDF reader like Adobe Acrobat or Adobe Reader.

How come this File Cannot be previewed in Outlook 365?

This File cannot be previewed in Outlook 365 because the Attachment Preview feature is disabled. To enable it, go to File > Options > Trust Center Settings > Attachment Handling and uncheck the Turn off Attachment Preview option.

Does Microsoft 365 have a PDF viewer?

Yes, Microsoft 365 has a built-in PDF viewer in Microsoft Edge, which allows you to view, highlight, markup, add text, and even have PDFs read aloud.

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