By default, #Tableau allows trusted tickets to “live” wihout being redeemed for up to 180 seconds. After 180 seconds the ticket is no good. 

Want to change that setting? You can. 

Use: 

vizqlserver.trustedticket.timeout_in_seconds seconds

Ala: 

tabadmin set vizqlserver.trustedticket.timeout_in_seconds 60

tabadmin configure

tabadmin restart