I think it's solved for now. I reset my Windows. This time I didn't change any default settings for Networking & didn't remove any Windows features. Before, I changed few networking settings like randomizing hardware address, changed it to Private.
Also before, I turned off all Windows features...
I am just trying to fix the connectivity issues. I don't know why it happens. Everytime when I download a lot, connection stops after sometime. Other devices on the same network works properly. That's why I try to reset TCP/IP everytime when this happens. It works but I have to do all those...
When I try to reset TCP/IP using cmd: netsh int ip reset, it shows error:
Resetting Unicast Address, OK!
Resetting Neighbor, OK!
Resetting Path, OK!
Resetting , failed.
Access is denied.
I googled and found the solution, to give permissions to a key in...