И это всё МОЁ
Describes a problem in which you receive an 0x800F0906, 0x800F081F, or 0x800F0907 error code when you try to install the .NET Framework 3.5 in Windows 10, Windows 8.1, Windows Server 2012 R2, Windows 8, or Windows Server 2012. Provides methods to resolve this problem.