Net Framework 4.0.30319.rar Guide

Attempting to install this old version on a new PC may fail because the OS already contains a newer, superior version of the framework. Recommendation

A .rar file is a compressed archive (similar to a .zip file), typically created using WinRAR. Microsoft distributes the .NET Framework either as a (a small .exe that downloads what it needs) or an offline installer (a larger .exe file). net framework 4.0.30319.rar

A search for a .rar file implies you are looking for a compressed archive hosted on a file-sharing site, a forum, or a torrent. Attempting to install this old version on a