The application you are installing requires the Microsoft .NET framework version 2.0 to run. On Windows 10 or 11 you can install .NET Framework 2.0 via the Windows Control Panel. To do so, press the Windows key on your keyboard to open the Start menu. Then type “Windows Features”. You should see an item “Turn Windows Features on or off”. Click that. Then tick the option “.NET Framework 3.5 (includes .NET 2.0 and 3.0)” and click OK. Windows will then download the necessary pieces of .NET 2.0, 3.0, and 3.5 from Microsoft and install them.
Windows Vista and Windows 7 come with version 2.0 of the .NET framework preinstalled. For Windows 98, 2000, XP, download the Microsoft .NET Framework Version 2.0 Service Pack 2 Redistributable Package (x86) (23 MB). For Windows XP x64 download the Microsoft .NET Framework Version 2.0 Service Pack 2 Redistributable Package (x64) (46 MB). These two links point to the Wayback Machine of the Internet Archive which archived these two downloads in 2010. Microsoft has removed them from its own servers. Once you’ve installed the .NET framework, you can continue installing the application.