Then she remembered: the offline installer .
You need to install the framework on multiple computers without downloading the same files repeatedly. Net Framework 3.5 Offline Installer Windows 10 64 Bit
Start Menu ➔ Type "Turn Windows features on or off" ➔ Check ".NET Framework 3.5" ➔ Click OK Then she remembered: the offline installer
Download your offline source from a trusted Windows 10 ISO, then run DISM. Never use "activator" tools or repacked EXEs. Net Framework 3.5 Offline Installer Windows 10 64 Bit
Open and note the drive letter assigned to the mounted ISO (for example, Drive E: or F: ). Step 2: Locate the Source Files