Review NET Framework
NET Framework is a package containing the necesary files to run the aplications develloped wiht the NETFramework technology.
Nowadays there are many applications developed by NET Framework. For running the apps is necesary the package: NET Framework de Microsoft.
Installing the NET Framework prevent posibles mistakes in the begining of the application.
If you want that the applications developed with NET Framework work correctly, it installs this package and forget the problems.