First, a little clarity. You will rarely find a file named "4.0.3019" on a download site.
Alternatively, you can try downloading from the official Microsoft .NET Framework download page if available. Download Net Framework 4.0.3019 For Windows 7 64 11 Fix
You’ve likely hit a common typo. The actual required version is .NET Framework 4.0.30319 . This post covers how to download the correct version, install it on Windows 7 64-bit, and fix the "This app can't run on Windows 11" error. First, a little clarity