The error message
To run this application, you first must install one of the following versions of the .NET Frameworkappears when attempting to launch a program that depends on specific .NET Framework components, which are missing, corrupted, damaged, or blocked within Windows.
This issue occurs due to the .NET Framework providing essential libraries required by many applications, and any malfunction can prevent the program from running correctly. Other possible reasons include:
A single broken or disabled component within the .NET Framework can stop the entire environment from functioning.
Author's summary: Fix .NET Framework errors with reliable methods.