The login history is a tool that allows administrators and users to view information about recent login attempts, such as date, time, status, source IP address, browser type, platform, application, and login type. Administrators can use this tool to identify why a user is unable to login to Salesforce by checking for any failed login attempts and their corresponding error messages or reasons. Reference: https://help.salesforce.com/s/articleView?id=sf.monitoring_login_history.htm&type=5