Hi: I'm using Reader 9.1 (English Win7 version) on a Windows 7 RC installation. When selecting a PDF link via Internet Explorer 8 it opens in a new browser window, then suddenly stops with a question mark box 'Adobe Reader'. Download Adobe Acrobat Reader DC. About: Adobe Acrobat Reader DC software is the free global standard for reliably viewing, printing, and commenting on PDF documents. It's the only PDF viewer that can open and interact with all types of PDF content, including forms and multimedia. Adobe Reader is a product developed by Adobe Systems Inc.This site is not directly affiliated with Adobe Systems Inc.All trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners.