Hi community, i am really stuck and i need your help please!

Copper Contributor
I have windows 7 ultimate 64 bits 2009, Intel(R) Core (TM) i3-3217U CPU, I'm facing a problem which is that many many many software don't work for me , they eaither require 8.1 windows update or NET Framwork 4.6 Update ( by the way i have 3.5 version). My search for updates doesn't work, when i try to update NET framwork it doesn't work either. So i downloaded windows 8.1 autonomous mode from Microsoft official website, it downloaded 7 files
- windows 8.1 KB2919355 x64
- windows 8.1 KB2932046 x64
- windows 8.1 KB2934018 x64
- windows 8.1 KB2937592 x64
- windows 8.1 KB2938439 x64
- windows 8.1 KB2959977 x64
- clearcomperessionflag (.exe) when i run this application it says this app is not valide Win32 and when i try to run one of the windows 8.1 autonomous file it says error 0xc8000222 or that that these files require wusa.exe and this app it doesn't work for me.
So please guys anyone has an idea how to solve this problem, i just need to update from windows 7 to windows 8.1,
And what is required from me in order to update it? is windows 8.1 free or not ?
Thank you
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