Ensure your Windows Installer service is updated.
If you want, I can:
Ensure you are using the true standalone offline package ( dotNetFx40_Full_x86_x64.exe ) and not the stub web installer ( dotNetFx40_Client_x86_x64.exe ). "Installation Did Not Succeed" / Generic Failure net framework 40 3019 windows 7 32 bit offline
John's experience with error code 3019 and the .NET Framework 4.0 offline installer on Windows 7 32-bit had been frustrating, but it had also taught him valuable lessons: Ensure your Windows Installer service is updated