.NET Framework 3.5 (which includes 2.0 and 3.0) is required by some older applications and installers. Windows 10 includes .NET 3.5 as an optional Windows feature; you can install it online via Windows Update or offline using an installer or Windows installation media. This article explains safe offline installation methods for Windows 10 64-bit.
He called her. "Maria, I need .NET 3.5 offline, and my internet is dead. Help." Download
regedit and hit Enter.HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5Version and Install DWORD value (should be 1).