Free Support
If the main site gives you version 4.0.30319.1 (a minor update), you want the original RTM or a clean build. Navigate to the ( catalog.update.microsoft.com ) and search for "KB2468871" or ".NET Framework 4.0".
Close all active applications to prevent file-locking conflicts during setup. Ensure you are logged into Windows with an Administrator account. If the main site gives you version 4
Users searching for "microsoft net framework 40 v 30319 download offline installer better" are usually frustrated by three specific errors. Here is how the offline installer fixes them. If the main site gives you version 4
Right-click the file and select Run as administrator . If the main site gives you version 4
Now I'll write the article. .NET Framework 4.0: A Complete Guide to the Offline Installer