How to delete devices I'm logged in. Or hackers have.....I

For a personal Microsoft account:

• To see where the account was used recently, go to the Recent activity page: See your recent activity. It shows sign-ins from the last 30 days and includes device or app-related details.
• If suspicious activity appears, use the Unusual activity section and mark entries as This was me or This wasn't me when available.
• To secure the account, go to the Security settings page and change the password and update security settings. That page also lets the account owner remove all trusted devices.
• To remove devices from the Microsoft account device list, sign in at account.microsoft.com/devices, select the device, then choose Remove device.
• If the goal is to stop access from a device no longer owned or recognized, accepted Microsoft Q&A guidance also points to Sign out everywhere under Manage how I sign in. It can take up to 24 hours to complete across browsers, apps, and devices.

For a work or school account:

• Sign in to My Account, select Devices from the left pane, and review connected devices.
• To block a device, select Disable for that device, then confirm with Yes.
• Warning: disabling a work or school device cannot be undone by the user. An administrator must add it again.

References:

• Check the recent sign-in activity for your Microsoft account
• What is the Recent activity page? | Microsoft Support
• [iOS](https://support.microsoft.com/accounts-billing/manage/manage-devices-used-with-your-microsoft-account)
• Manage your work or school account connected devices from the Devices page | Microsoft Support
• Can I sign out on devices remotely through my account - Microsoft Q&A