This .NET Framework 3.5 for Windows 8 or Windows 8.1 won’t come with pre-installed .Windows 8, Windows 8.1 or Windows 10, and must be separately enabled to run applications that depend on it. So enable the .NET Framework 3.5 in Control Panel to avoid windows update 0x800705b4
This .NET Framework 3.5 for Windows 8 or Windows 8.1 won’t come with pre-installed .Windows 8, Windows 8.1 or Windows 10, and must be separately enabled to run applications that depend on it. So enable the .NET Framework 3.5 in Control Panel to avoid windows update 0x800705b4
Note: Make sure you have set correct Date and time on your computer, try to install pending updates through other available networks.Run windows update troubleshooter.