TLS errors
TLS handshake failures usually mean the client could not complete the secure OpenVPN negotiation with the endpoint.
Use this guide when a public profile times out or repeats TLS handshake errors.
Fresh public endpoints fail less often.
Useful when UDP or custom ports are blocked.
The most common cause is a public endpoint that disappeared after the profile was published.
Hotel, airport and corporate Wi-Fi can block UDP or non-standard ports.
TCP and UDP are not interchangeable; match the profile protocol.
Device clock problems or incompatible certificate settings can break TLS negotiation.
Captive portals and DPI can interrupt OpenVPN even when the port looks open.
A fresh TCP 443 row is often the best fallback on restrictive networks.
If two attempts fail, move to another recently checked profile instead of retrying stale data.