@yanta

I checked built-in VPN and it was disabled, so I don't think it the cause of the problem.

I also tried to check windows firewall but to no vail.

I tried that but still the same
i also tried windows trouble shooting

and got the following result

Hello,

after I downloaded opera version 53.0.2907.68, I started to have to weird problem
sometimes every site I try to access or any link including videos stop working and I see (this site can't be reached)

opera starts to show me this problem then stop on its own. I tried to use other browsers such as mozilla and chrome but didn't see this problem

so I tried to uninstall and reinstall opera but didn't work and tried to disable all extensions and remove them but nothing worked.

any suggestions ?

[Mod note: Against the rules topic fixed this time]