Review recent activity and recent login location
Overview
If you need to change your account settings or troubleshooting a problem with your account, Microsoft provides a number of services to self-manage your account. The My Signins page is for changing and viewing account details.
My Sign-Ins
On the My Sign-Ins Page, users can view recent logins and activity on their account. This page can be useful for checking both unauthorized attempts to access your account or for troubleshooting accidental log-in attempts from, email clients and other services connected to your Microsoft account.
If you do not recognize the locations of the login and believe someone is logging from another location, go to My Sign-Ins | Security Info | Microsoft.com and click on sign out everywhere. Then change your password using the password tab My Sign-Ins | Security Info | Microsoft.com
Please note: Some login locations listed by Microsoft may be inaccurate depending on your network configuration. Please use Operating system, Browser, and time of day to help determine if login attempts are malicious.