The .NET framework is a software library released by Microsoft that allows users to run applications developed in .NET languages such as C#, Visual Basic.NET and ASP.NET. If your installation of the .NET framework is corrupted, not working, or simply needs to be uninstalled, Microsoft has released a method for removing the framework from your computer's Start menu.
Press the Windows key and the R key at the same time to open the Run menu.
Type "installer" then press "Enter."
Click "View," then click "Details."
Right-click "Name" then click "Comments."
Right-click the ".NET Framework..." entry, which is immediately followed by a version number. Click "Uninstall."
Click "Next," then click "Yes." The .NET framework will be uninstalled.