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VPN tunnel shows no handshake (evaluation server)

Problem

The WireGuard tunnel is activated, but it never shows a handshake and the Probe viewer does not load.

Solution

This is almost always caused by outbound UDP traffic being blocked by your network or firewall.

  1. Ask your IT department to allow outbound UDP to vpn.esharp.se on port 51822. No inbound access is needed.

  2. Deactivate and activate the tunnel again.

  3. If it still fails, try from another network (for example a mobile hotspot) to confirm whether the block is local.

Networks that only allow ports 80 and 443 outbound, common on guest and hotel networks, will block the connection.

  • Connect to the Probe server (VPN)

  • Using Probe alongside a corporate VPN