[fChk]

Regarding Fedora @fChk.  Last I knew someone trying it out, a couple or more years ago, it didn't go so well.  Like it's more for seasoned Linux users or that was my perception any way.  What configuration of Fedora are you using for desktop? Probably a tall order to ask, but if at any point of time you are inspired and have time available, would be awesome if you could provide a step by step tutorial how to set up a Linux desktop as a Windows 10 alternative.

I would rather wait for someone else to open a thread about that, to give my inputs on the subject. There is nothing standard about my own setup, even the system is a Fedora Server edition on which I installed the Gnome desktop environment that I've then tweaked over the years. Also, I always boot first on the shell (Init level 3; not 5) then fire up the GUI when I need it.. etc.

It's really not the standard way of doing things.

Speaking of Mozilla Firefox @fChk.  Did you notice a MAJOR new update - 69 - for Mozilla Firefox just recently specifically focused on tracking of one's internet surfing?  Is it possible to let us know your views, also what are the negatives with having such an anti-tracking system on one's browser that we need to watch out for?

Indeed, they should have done that a long time ago -if you ask me- instead of letting that job to the extensions. This is a subject that we've discussed at length @FFS.

Tracking is the plague of the Internet in general and the Web in particular. I've always had (and still have) at least 4/5 extensions for the sole purpose of blocking it;  Firefox's own anti-tracking system is just yet another layer of protection. Someone should open a thread on this subject too.

The quick answer for the negative side of having Firefox anti-tracking ON is the possibility of breaking web-sites, depending of the way you set it up; ie standard/strict/custom. I'm using it in its strict mode by-the-way!.. This is also true, for when using CORS-blocking extensions (like Privacy badger, uBlock origin etc...)

Actually i have updated my windows. I don't think windows 7 automatically download updates. Because whenever i enable update and try checking for updates. It fails. As Hidden Refuge said windows 7 is no more supported by Microsoft. I manually download essential updates and install them. After that i updated the dot net framework. But still same thing happens.

I'm aware that Windows update is NO MORE. I've given you a web site that gives you a shell script that takes care of that. What you need most is those TRCs.

OK! There you go. A simple Google search:
https://www.google.com/search?client=fir...+Windows+7

.. yielded this:
https://support.microsoft.com/en-us/help...tificate-p

and this:
https://support.microsoft.com/en-us/help...for-window

You're in luck!

On the other hand i have some questions in my mind, that how will i be able to use my pc with linux OS. How will i use my .exe programs those are limited to Windows. How will i use Microsoft Office tools, those are essential for my education work. ( i know i can do it online but not as in pc ). What about system Drivers etc.

We can discuss this at length if you open a thread for it. I'm under the impression that you still have a lot to digest Computer-systems-wise!