Managing Azure AD’s Keep Me Signed In (KMSI) Feature
The Azure AD Keep Me Signed In (KMSI) feature uses a persistent cookie to allow users close and reopen browser sessions without sign-ins. If you don’t want to use KMSI, you can update Azure AD company branding to remove the option. Users will then have to reauthenticate each time they start a browser session. The decision to disable or keep KMSI is highly tenant-specific and depends on how authentication happens.