Open by right-clicking the Start button.
The Complete Guide to .NET Framework 3.5 Offline Installer (64-bit) net framework 3.5 offline installer 64 bit
Method 1: Using Windows Installation Media (The "True" Offline Method) Open by right-clicking the Start button
Use the built-in Turn Windows features on or off → check .NET Framework 3.5 → let Windows download it (requires internet). That method ensures proper patching and fewer errors. net framework 3.5 offline installer 64 bit