How to delete another profile / user linked to my profile

Restore the Outlook.com display language, then secure the account and remove the unfamiliar address only from the account area where it actually appears; the profile-menu entry alone does not establish that another person is linked to your mailbox.

1. Restore the language

On a computer, open the direct Outlook.com language page:

https://outlook.live.com/mail/0/options/general/timeAndLanguage

1. In the first dropdown, select your preferred language.
2. Select Save.
3. If necessary, sign out and sign back in.

The normal menu path is Settings (gear icon) → General → Language and time → Language (Country/Region) → Save.^1^

2. Treat the unexpected changes as a possible compromise

Because both the interface language and account list changed unexpectedly:

1. Run an up-to-date antivirus full scan on the computer first.
2. Change your Microsoft account password to a new, unique password.
3. Turn on two-step verification.
4. Open the Microsoft account Recent activity page and inspect the last 30 days. Expand unfamiliar entries and choose This wasn’t me where that option appears. Microsoft recommends securing the account if you find suspicious sign-ins or profile changes.^2^

Microsoft’s compromised-account procedure specifically recommends scanning for malware before changing the password, followed by checking account settings such as forwarding and connected accounts.^3^

3. Find and remove what was added

Check each of these separately:

• Unknown alias: Go to the Microsoft account page → Your info → Sign-in preferences. An alias is another address using the same Microsoft account, inbox, contacts, and settings. Remove an alias only if you are certain it is not yours. Do not remove your own primary Hotmail address.
• Unknown recovery email, phone, or authenticator: Open Security → Security settings and select Remove beside the unfamiliar method. Microsoft might require you to add valid replacement security information first.^4^
• Unknown application: Review applications allowed to access your Microsoft account and revoke anything unfamiliar.
• Unknown device: Remove it from the Devices section of your Microsoft account.
• Outlook changes: In Outlook.com, check Settings → Mail for unfamiliar Rules, Forwarding, automatic replies, blocked/safe senders, and POP/IMAP settings. Delete only entries you did not create.

Afterward, use Security → Manage how I sign in → Sign out everywhere. Existing sessions can take up to 24 hours to disconnect.^5^

If the unfamiliar name appears only in the profile dropdown

It may be a remembered account-switching entry rather than an alias or mailbox user. The supplied Microsoft guidance does not document removal of that specific Outlook.com dropdown entry. First sign out of all Microsoft accounts, then check whether the entry still appears in a private/incognito browser window:

• If it does not appear privately, it is likely stored by the normal browser session; clear Microsoft/Outlook site data or remove the remembered account through the browser’s sign-in interface.
• If it appears under aliases, security information, devices, or recent activity, remove or secure it using the relevant steps above.
• Do not close your Microsoft account to remove this entry; closing it permanently deletes your Outlook.com email and contacts and can also remove access to other Microsoft services.^6^

References

1. Manage language settings in Outlook | Microsoft Support
2. What is the Recent activity page? | Microsoft Support
3. How to recover a hacked or compromised Microsoft account
4. Removing a sign-in verification method | Microsoft Support
5. Email Hacked. Now in Chinese language. - Microsoft Q&A
6. Close your Outlook.com account | Microsoft Support