Message
Session credential rejected
Session credential rejected: what the ForestVPN message cp.ticket_invalid means, why it appears and what to do about it.
Updated October 11, 2026
The app says: "Session credential rejected."
What it means
The server rejected the short-lived credential the app used to start this session.
What to do
Connect again. The app gets a fresh credential.
Why it happens
The credential was used already, or arrived damaged.
Where you see it
The ForestVPN apps show this message on the connection screen, and in a notification when it affects your connection. The code is cp.ticket_invalid.