The .NET Framework Repair Tool provides an option to repair the versions of .NET Framework that are installed on the computer (step 3 of the process in the "Repair Tool options" section). The tool requires the redistributable files of those versions to be available at the time of repair.

The Microsoft .NET Framework 4.7.1 is a highly compatible and in-place update to the Microsoft .NET Framework 4.6.2 and 4.7. However, it can run side by side with the .NET Framework 3.5 Service Pack 1 (SP1) and earlier versions of the .NET Framework.