If the file disappears or won't open:
Always run the file through a tool like VirusTotal before executing it. How to Install 1install dotnetfx40fullx86x64intlslimexe exclusive
: Verify that your operating system supports .NET Framework 4.0. It can be installed on Windows XP, Windows Vista, Windows 7, Windows 8, and their respective 64-bit versions. If the file disappears or won't open: Always