Acrobat Reader: Fix “There was an error opening this document. Access denied.”

Some users of Adobe Acrobat Reader may encounter an error when they attempt to open a PDF file from their email client such as Microsoft Outlook. An error may appear that says “There was an error opening this document. Access denied.” There is a simple fix for this error. Just follow these steps.

Uncheck box in Adobe Reader

  1. From Acrobat Reader, select “Edit” > “Preferences“.
  2. Select “Security (Enhanced)” on the left pane.
  3. Uncheck the “Enable Protected Mode at startup” box.
  4. Select “Yes” to the prompt about being sure about making this change.
  5. Click “OK“.

You should be good to go! Adobe Reader should now open files just fine.

Categories: Software

Author Mitch Bartlett

Through my career that spans over 20 years I have become an expert in Microsoft Systems Administration, Android, and macOS. I started this site as a technical guide for myself and it has grown into what I hope is a useful knowledgebase for everyone.

You Might Also Like

What Is Burp Suite?

Discord: What is Krisp Noise Suppression?

Zoom: How to Increase the Maximum Number of Participants You Can See in the Gallery View

Slack: How To Change Your Password

Comments

Alda Berneaud-daRosa says:

It did not help because all this is too alien for me.
Normally, one of my sons fix these things for me.
Files that I archived 4 years ago are now getting this “Error” … “Access denied” message.
They are being opened by Adobe which I never downloaded. I never downloaded the app. And, don’t want it.
I use Chrome and it’s updated.
Microsoft Edge has been opening some of my files. And the rest, I don’t even know who or what.
I apologise for my tech ignorance, but I do need help.
I’ve been working on my Family Tree/History and need those files. Some were collected in archives in Germany.
Thank you for your attention.
Alda

AP says:

Thank you so much! I had this issue as well and IT didn’t know how to deal with it. When I had the time, I found this page. The only thing I had to change was that, possibly because I use Acrobat Pro, not Reader, I had to click the colorful like icon in the top right (when you hover over it, it shows the user’s profile name and there’s a menu option “Preferences” which allowed me to continue following the steps. THANKS!! Huge life saver!

William Scanlen says: It worked for me. Thanks. Robert Pyne says:

This is a right to the PDF issue. Security settings on the file need to be changed in order to open it.