Download Dotnetfx45-full-x86-x64.exe Offline Installer 2021

Microsoft has for .NET Framework 4.5, 4.5.1, and 4.5.2. The recommended version is .NET Framework 4.8 (still supported).

You can find the official installer on:

Whether you are installing this on a or managing an enterprise deployment download dotnetfx45-full-x86-x64.exe offline installer