Log out other users

Jennifer Jones 0 Reputation points
2026-09-13T15:33:40.3333333+00:00

Someone has hacked the MSN account and I don’t know how many other users are logged in. How do I block other users?

Outlook | Web | Outlook.com | Account management, security, and privacy
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  1. John Jefferson Doyon 87,495 Reputation points Independent Advisor
    2026-09-13T16:27:22.34+00:00

    Hi, @Jennifer Jones

    First, can you still sign in to the Microsoft account and have complete access to it?

    If yes, change the password to a new one that you have not used before.

    Then sign the account out from other devices:

    Also check the account security information and remove any email address, phone number, or sign-in method you do not recognize.

    If the issue still persists, to help narrow down the issue:

    1. Did the hacker change the password or any recovery email or phone number?
    2. Do you see any unfamiliar activity under the account's recent sign-in activity?

    Click "Add comment" to let me know.

    Thanks!

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  2. AI answer

    2026-09-13T15:33:56.7133333+00:00

    For an MSN/Outlook.com personal Microsoft account, the fastest way to block unauthorized access is to sign out everywhere and tighten sign-in methods.

    1. Sign out of the account everywhere.
      • Use the Microsoft account “sign out everywhere” option to sign out from all trusted devices.
      • This is recommended when unauthorized access is suspected.
    2. Change which aliases are allowed to sign in.
      • Go to your Microsoft personal account at account.microsoft.com and select Your info > Sign-in preferences.
      • Choose which email aliases are allowed to sign in, then select Save.
      • This blocks sign-in for selected aliases while keeping them on the account.
    3. Add another way to sign in or verify identity.
      • Go to the Advanced security options page of the Microsoft account.
      • Select Add a new way to sign in or verify.
      • Keep phone numbers and email addresses used for verification up to date.
    4. Check Outlook.com sign-in state in the browser.
      • In Outlook.com, select the account picture or initials in the top corner and select Sign out.
      • If Sign out is not visible, sign out manually and close all browser windows.
    5. If the account is blocked because of unusual activity, use the sign-in recovery flow.

    Important:

    • Outlook apps do not support signing out in the same way as Outlook.com in a browser.
    • If access is still being attempted, restricting which alias can sign in is the supported way to block sign-in for a specific email address on a personal Microsoft account.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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