The error message
“To run this application, you first must install one of the following versions of the .NET Framework”appears when launching a program that depends on specific .NET Framework components, which are missing, corrupted, damaged, or blocked within Windows.
This issue occurs due to the absence of essential libraries required by many applications, causing malfunctions. 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 error with reliable methods.