To protect your system from malicious files masquerading as dotnetfx.exe or similar:
Starting with Windows 8, Microsoft removed .NET Framework 3.5 from the default operating system installation. While you can enable it via "Windows Features," that method requires an active internet connection to download files from Windows Update. If you are on a secure network without internet, or if Windows Update is broken, you need the offline installer—. dotnetfx 365.exe
A massive library of reusable code that developers used to build user interfaces, connect to databases, and manage file systems. To protect your system from malicious files masquerading