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.