Final answer:
To find out which version of the .NET Framework is installed, you can either check the Windows Registry, look in the installation folder, or use the .NET Version Detector utility.
Step-by-step explanation:
How to Determine Which Version of .NET Framework Is Installed
To find out which version of the .NET Framework is installed on a Windows computer, one can use several methods. One common method is through the Windows Registry. Here are the steps:
Press the Windows key + R to open the Run box.
Type 'regedit' and press Enter to open the Registry Editor.
Navigate to the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\ - the versions are listed under this key.
Look for a folder with the version number, such as v4.0 (for .NET Framework 4.0 and above) and expand it.
Select the 'Client' or 'Full' subkey, which will show you the exact version of the .NET Framework installed.
Another way to check for the .NET Framework version is to look for the installation directory at 'C:\Windows\Microsoft.NET\Framework\'. Here, multiple folders may represent the installed versions, such as v4.0.30319, indicating .NET Framework 4.0 is installed.
For users who prefer a less technical approach, you can download and run a free Microsoft utility called .NET Version Detector that will list all the installed versions.