ERR_NETWORK_CHANGED, what it means and how to fix it

Chrome noticed the ground move mid-request: your IP address or network interface changed while a page was loading, so the in-flight connections pointed at a network that no longer exists. Wi-Fi roaming, a VPN connecting or dropping, switching from Ethernet to Wi-Fi, and waking a laptop from sleep are the everyday triggers.

The fix, in order

  1. Just reload. If the network has settled, the retry works immediately. Most instances of this error are one-off events tied to a switch that already finished.
  2. Wait out VPN reconnects. If a VPN client is reconnecting or split-tunneling changes routes, every in-flight request fails until it finishes. Connect the VPN fully, then reload.
  3. Stop the network from flapping. If it recurs, find what is switching: a laptop bouncing between two Wi-Fi networks of similar strength, a phone hotspot dropping, or a loose Ethernet cable. Forget the weaker network or reseat the cable.
  4. Turn off Wi-Fi power saving on laptops that do this after sleep. Aggressive adapter sleep causes a change event on every wake. The setting lives in the adapter's power management options in Device Manager.
  5. Update the network adapter driver if changes are reported when nothing changed; buggy drivers report phantom link events.

If it still happens

On a stable wired connection with no VPN, a recurring ERR_NETWORK_CHANGED points at failing hardware (adapter, cable, switch port) or a driver problem, since nothing legitimate is changing the network.

Common questions

Why does ERR_NETWORK_CHANGED appear right after my laptop wakes up? Sleep drops the network entirely and waking rejoins it, which is a network change. Requests the browser tries to resume from before sleep reference the old connection and fail once; a reload on the rejoined network works.

Is ERR_NETWORK_CHANGED a sign someone is tampering with my network? No. It is a routine notification that the local network configuration changed mid-request. VPNs, roaming, and sleep cause it constantly on healthy machines.

Related errors

ERR_INTERNET_DISCONNECTED · ERR_CONNECTION_RESET · ERR_SOCKET_NOT_CONNECTED