Best Ways to Resolve Outlook PDF Preview Handler Error

User Query – I am an Outlook user for the past few years. But suddenly, I am facing an irritating problem with the ‘Outlook PDF preview handler.’ Even though I have tried various attempts to fix the error of Outlook PDF file can not be previewed. Please let me know the possible ways to resolve the error that my PDF preview handler in MS Outlook starts working.


The “PDF preview handler not working” error is not a typical error. It usually happens when a user wants to preview their PDF file but is unable to do so. There are various scenarios behind such an issue.

  • You have not installed any previewer to view your PDF files in Microsoft Outlook.
  • Users may disable the Automatically Detect Settings.
  • It may be a Registry issue behind Outlook PDF Preview not full screen.
  • Your target PDF file has been missing from the preview section.

This file cannot be previewed because of an error with the following previewer.

[preview handler name]

I have mentioned some common reasons for causing the PDF Preview handler error in MS Outlook. Now, I will discuss all troubleshooting procedures to resolve the issue.

Ways to Resolve The Problem of Outlook PDF Preview Handler

I have several ways to fix the PDF previewer for Outlook not working error. You just need to check out all of them to get your answer.

  1. Download and Run the Latest version of Adobe Acrobat
  2. Update your Microsoft Outlook application
  3. Remove all temporary files
  4. Check whether PDF Preview Handler is enabled or not.

Here, I have given you a short overview of all the possible troubleshooting methods. Further, I will discuss each of them in detail.

Solution 1: Download And Run The Latest Version of Adobe Acrobat

  1. First, open the Adobe Reader application on your local system.
  2. Then, move to the Help option > Check for Updates option.
  3. After that, complete the following instructions under the Updater window accurately.
  4. Thereafter, launch Reader and select the Help option > About Adobe Reader button.
  5. Now, navigate to the Adobe Reader Downloads page, which will help to detect the downloaded Reader on your OS.
  6. If you have the latest version, click on the Install Now button.
  7. Further, please ensure that to set it as a default way to open PDF files.
  8. In the end, restart your Microsoft Outlook application and try to preview your desired PDF file again.

I have mentioned the easiest way to resolve the Outlook PDF preview handler issue. If the above solution does not work, you can go with the other methods.

Solution 2: Update Your Microsoft Outlook Application

  1. First, launch the MS Outlook application > File tab.
  2. After that, choose the Account section.
  3. Then, navigate to the Product Information, and select the Update Options > Update Now option.
    outlook pdf preview handler
  4. If you are unable to find the Update Now option, you have to move towards the Enable Updates option first.
  5. Lastly, close your Outlook application if you have updated your program.

I have gone through another way to fix the Outlook PDF preview handler by updating the MS Outlook application.

Solution 3: Remove All Temporary Files

  1. Make sure to exit from your Microsoft Outlook application.
  2. After that, press Windows + R to open the Run dialog box.
  3. Then, mention %temp% in the run dialog box.
    outlook pdf preview handler
  4. Afterwards, navigate to the highlighted local path and ensure to delete all files or folders.

%userprofile%\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.Outlook\

Here, I have mentioned other possible solutions to resolve the Outlook PDF file cannot be previewed issue.

Solution 4: Check Whether PDF Preview Handler is Enabled Or Not

  1. First, launch the Microsoft Outlook Application.
  2. After that, choose the File tab > Options > Test Center > Trust Center Settings > Attachment Handling option.
  3. Then, a new dialog box will appear as the Trust Center Tool, uncheck the box of the Turn-off Attachment Preview option > Ok button.
    outlook pdf preview handler

I have mentioned all possible methods to fix the Outlook PDF preview handler problem. If all solutions are not working, it simply means that your PDF files are severely corrupted. If you want to repair your PDF files, you can opt for the Sysinfo PDF Recovery Tool. It will help users to recover damaged PDF files efficiently. Moreover, it will aid in viewing the encrypted PDF files.

The Final Words

I am here to provide you with a conclusion of the entire guide and hope you got your answer from it. I mentioned several troubleshooting methods to fix the Outlook PDF preview handler issue. You can go through and understand each step carefully. Sometimes, a PDF file not opening error occurs.  In such case, you can read this another blog.

About The Author:

As a content writer, I specialize in Email Migration, Data Recovery, Email Backup, and File Management. I have been writing professionally for two years now. There is so much information available in this field that I am intrigued by the newer technologies and techniques.

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