Should I change SNI manually?
For WersidePN, usually no. The subscription delivers current parameters, so refreshing the profile is safer.
TLS handshake
V2RayTun TLS error: handshake failure
TLS error or handshake failure often means the client and server could not agree on a secure connection. With VLESS Reality, it is usually caused by stale profile or mismatched parameters.
What can be wrong
V2RayTun profile is outdated
SNI, public key or shortId do not match the server
the client imported a manual key instead of subscription
the network filters a specific route
How to fix
1
Refresh the subscription in V2RayTun.
2
If it fails, remove the profile and add the subscription URL again.
3
Test the connection on another network.
4
Do not edit Reality parameters manually unless needed.
Common questions
Why did TLS error appear after renewal?
The client may not have refreshed its profile. Refresh the subscription or add the link again.