A session-expired message is usually a security feature rather than a permanent failure. It indicates that the temporary browser session is no longer valid.
Inactivity, connection interruption, browser sleep, duplicate tabs, or returning to an old page can all invalidate a session.
Close the expired tab and begin from the trusted entry point instead of refreshing the expired page repeatedly.
Multiple tabs can compete for session state. Use one clean tab during troubleshooting.
A significantly incorrect device clock can interfere with secure token and certificate behavior.
Some session durations are controlled by organizational policy and cannot be changed locally.
