Monitor Network Traffic Windows 11 May 2026

You also see a new "unidentified" device on your local network. Wait, is that your roommate’s phone or a neighbor’s hacked camera? GlassWire shows you each device’s traffic. You block the unknown MAC address.

But who is the culprit?

You click the tab, then "Ethernet" (or Wi-Fi). You see a graph—a blue wave of send/receive activity. It’s spiking hard, even though you’re doing "nothing." monitor network traffic windows 11

Now your network is quiet. The graph is flat. You click "Join Meeting" with confidence. You also see a new "unidentified" device on

You install GlassWire (free version). Within 2 minutes, you get a timeline graph of your last 24 hours of traffic. You see a massive blue spike at 3:00 AM—that’s your PC waking from sleep to download Windows updates. You block the unknown MAC address

There it is. is chugging 15 Mbps. Windows is secretly uploading updates to other PCs on the internet (a feature called peer-to-peer updates). You right-click, end the task temporarily, and your Zoom clears up.