Tailscale Key Expiry _best_ -

Click the menu on the right and select Disable Key Expiry . Changing the Global Expiry Period

If a remote device's key has already expired and you cannot access it to reauthenticate, admins can use a "safety valve" feature: tailscale key expiry

Admins can manage these settings through the to prevent unexpected lockouts. Disabling Expiry for Specific Devices Click the menu on the right and select Disable Key Expiry