If you are searching for separate offline installers for and 3.0 , stop looking. Microsoft merged them into a single package years ago.
This article provides a deep dive into what these frameworks are, why they are bundled together, how to perform a clean offline installation, and how to troubleshoot common errors. net framework 2.0 and 3.0 offline installer
Open regedit and navigate to:
Run:
The progress bar crawled. Copying files... Registering components... Updating system registry... If you are searching for separate offline installers