Installation Process For The .NET Framework 3.5 In Windows 8 OS And Windows 7 OS
For the installation of the .NET Framework 3.5 in Window 8 or Windows 7, than you need to open the Control Panel just "Press The Windows Key + R" and type "Control Panel" and press Enter than Control Panel Opened.
Now see the list of options in the Control Panel and click on the Programs and Features Option, Than see in the left corner of the Program And Features Windows, so you saw the "Turn Windows Features On or Off" Option
so click on that. So Windows Features Windows Open, Now find the ".NET Framework 3.5" option in the Windows Features Windows than you saw option in the upper side of the list so Checked the Check Box of the ".NET Framework 3.5" Option and click on the OK Button
and restart the PC.
Now .NET Framework 3.5 Installation completed properly.
And also if you are used the Windows XP or Other Downgrade OS of the Windows, than open the following Website :
So download the .NET Framework 3.5 From the above website and installed in the PC and after the installation restart the PC, than installation takes place properly.