How do I check which version of .NET Framework I have installed?

You can check the version of .NET Framework installed on a computer by opening a command prompt, navigating to \%windir%\Microsoft.NET\FrameWork, and then navigating to the directory with the latest version number. Once in the directory with the latest version number, run the command .\MSBuild.exe -version.

The above command will output the latest version installed in the following format:

C:\Windows\Microsoft.NET\Framework\v4.0.30319> .\MSBuild.exe -version

When the command is entered, the following information will appear:

Microsoft (R) Build Engine version 4.6.1038.0

[Microsoft .NET Framework, version 4.0.30319.42000]

Copyright (C) Microsoft Corporation. All rights reserved.

The last line, after the copyright, will output the most recent verson of .NET Framework on your computer, for example, 4.6.1038.0.