Everything ((exclusive)) - Why Is My Firewall Blocking

I ran a rootkit scan. Nothing. Malwarebytes: clean. System file checker: no integrity violations. So it wasn't a virus. It was something stranger.

I never found out who “she” was. I wiped the drive, reinstalled Windows, and moved to a new city within a week. The firewall works fine now. But sometimes, late at night, I see a single blocked connection attempt in the log. Destination IP: the old apartment. Port: 443. Protocol: HTTPS. Process: bxdiag.sys . why is my firewall blocking everything

I went downstairs. Knocked. No answer. The door was unlocked. I ran a rootkit scan