If this didn't work, you can also try to revert to an earlier version of Adobe Reader or Acrobat. Click Update and wait for it to finish.

Select Check for Updates from the drop-down list.

Look for Enable Protected Mode at startup under Sandbox Protections and uncheck it.

Select Security (Enhanced) from the left sidebar of the new window.

Look for Preferences from the drop-down list and click it.

Choose Edit from the menu bar at the top.

On Mac: open Finder -> locate and select your PDF file -> click File -> choose Get Info -> expand the Open with category -> choose Adobe Acrobat Reader DC or Adobe Acrobat DC -> click on the Change All button.įix 2: disable Protected Mode at startup.

On Windows: navigate to the PDF file -> right click on it -> select Open with -> click Choose another app -> Choose Adobe Acrobat Reader DC or Adobe Acrobat DC -> check Always use this app to open.

The steps to set default programs on Windows and Mac are different. Besides, you’d better set Acrobat Reader DC or Acrobat DC as the default PDF file reader. Please install the free Adobe Acrobat Reader DC or Acrobat DC on your computer if you didn’t have one before. Windows Photo Viewer Can't Open This Picture Error! Here, I’ll list the common reasons for PDF files not opening issue. Some of them can’t help but ask: why can't I open a PDF. The PDF files won't open after users clicked on it. There are a lot of people saying they can't open PDF in Windows 10, Windows 8, or Windows 7.

What are the causes of PDF files not opening? How to fix when you can't open PDF files? Please keep reading. But the problem is some users can't open PDF. The modern web browsers like Google Chrome, Mozilla Firefox, and Internet Explorer can easily open PDFs besides, Acrobat Reader DC and Acrobat DC are two useful tools to help users open PDF files on their computer. PDF files are mainly used to present documents including images and text information.

PDF is the acronym of Portable Document Format, which is a file format developed by Adobe in the 1990s.

Why does this happen? How to fix when you can’t open PDF files on your computer or in a browser like IE? Please find answers in the following content provided by MiniTool Solution. But many people say they have trouble opening a specific PDF file. In fact, most web browsers you use currently allow you to open PDF files easily.

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