rundll32 activity

Discussions tagged with rundll32 activity on WindowsForum.com focus on firewall logs that show rundll32.exe making network connections. Users report seeing blocked outbound TCP traffic from C:\windows\syswow64\rundll32.exe to external IP addresses and domains, such as files.nflxso.ca on port 443. The activity is logged as originating from the Windows host process (Rundll32) and is often flagged by firewall rules. These threads typically seek to understand whether the rundll32 activity is legitimate or a sign of malware, and how to safely manage or block such connections. The tag covers troubleshooting firewall alerts and interpreting rundll32.exe network behavior in Windows environments.