The Client Portal session will end after 60 minutes of inactivity. When the session is about to expire, an alert appears asking to either 'Log out' or 'Stay logged in' allowing you to extend the session. However, the default inactivity time of 60 minutes cannot be changed.
Can I extend my session in Client Portal?
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Why does Client Portal say "You are currently logged in without Trading/Market Data permissions"?
How do I configure Alert Notifications?
Why did Client Portal log me out?
I lost my connection; do I have to wait for my TWS session to time out before I can log into IBKR Mobile?