Sometimes it isn't the software on your computer, but the firewall on your .
I ran a rootkit scan. Nothing. Malwarebytes: clean. System file checker: no integrity violations. So it wasn't a virus. It was something stranger. why is my firewall blocking everything
You’d think a firewall is a simple thing: it says “yes” or “no.” But mine had started screaming “no” at everything—my browser, my email, even the little widget that checks for system updates. Every few seconds, a fresh alert popped up in the corner of my screen: “Firewall blocked connection to 192.168.1.1.” Then: “Firewall blocked svchost.exe.” Then: “Firewall blocked Windows Explorer.” Yes. It had blocked Explorer. I couldn’t see my own files anymore. The desktop was a static photograph. Sometimes it isn't the software on your computer,
: Many firewalls are configured to block all incoming and outgoing traffic by default. If specific "Allow" rules haven't been created for your apps or browser, everything stays blocked. Malwarebytes: clean
: Software updates or abrupt shutdowns can sometimes corrupt firewall rule databases, leading the system to block all traffic as a safety measure.
This sounds unrelated, but it’s a frequent silent killer of internet connections.