I have CefSharp-master project with which is Built on Chromium- 31.0.1650.57. All is working fine and perfect, but when I click on link to load/view PDF file on an website and popup get loaded and after some time I got dialog box saying "CefSharp.BrowserSubprocess.exe has stopped working." and oped popup window become black. Below is what I found in windows event viewer.. Application: CefSharp.BrowserSubprocess.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.AccessViolationException Stack: at <Module>.CefExecuteProcess(CefMainArgs*, CefRefPtr<CefApp>*) at CefSharp.CefAppWrapper.Run(System.String[]) at CefSharp.BrowserSubprocess.Program.Main(System.String[]) What is problem? I searched a lot but didn't find any think.