VPN drops when the laptop switches between Wi-Fi and wired or between networks.
Many VPN clients pin the session to the client IP. If the laptop changes interface the tunnel dies. WireGuard and modern SSL VPNs support roaming, but it has to be enabled.
Try this first
- 1Check in the client whether persistent keepalive or connection roaming is on.
- 2WireGuard has it built in, OpenVPN needs the float option set in config.
- 3Always On VPN on Windows can survive interface changes via Device Tunnel + User Tunnel.
- 4If MFA is required on reconnect, widen the session window or use a device certificate instead of interactive login.
When to bring us in
Field staff constantly switch between 4G and Wi-Fi: pick a client with explicit mobile roaming, or move to ZTNA where session state lives at the cloud side.
See also
- VPN will not connect or keeps droppingTwo main causes: your home internet or the VPN server. One quick test separates them.
- VPN connects but corporate folders are unreachableConnection says "green" but your network drives will not open. Almost always a DNS or routing issue.
- Home PC slow on VPN, fast at the officeThree suspects: home internet, VPN server limits, or routing that takes a long detour.
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