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Hi Georgie F,
If the unwanted @outlook.com address does not appear under Manage how you sign in on the Microsoft account, then it is likely not a removable alias on that account.
In cases like this, the address is usually being pulled from a different identity context, most commonly one of the following:
- The Microsoft account’s primary alias
- A separate account or profile still added in Outlook
- The Windows sign‑in profile, if the PC is linked to an older Microsoft account
Since you mentioned that this address is “trumping” your normal one and causing issues when working with volunteers, the first step is to identify where the address is actually appearing:
- In Outlook on the web, does it show up in the From field?
- In the Outlook desktop app, is it listed as a separate account?
- In Windows > Settings > Accounts > Your info, is the device signed in with an older Microsoft account?
Please try the following checks:
- Review the Microsoft account alias page
- If your correct address is listed, set it as the primary alias.
- If the unwanted address is listed and no longer needed, remove it carefully.
- Check Outlook account settings
- If the unwanted address is added as a separate account in Outlook, remove that account.
- Check the Windows sign‑in account
- If the PC is signed in with an old Microsoft account, that identity can continue to surface in Outlook and other Microsoft apps, even when email settings look correct.
If the address still appears only in Outlook after these steps, the next likely cause is a stale Outlook profile or cache, in which case recreating the Outlook profile usually resolves it.
The main goal is to confirm whether the address is coming from the Microsoft account, the Outlook profile, or the Windows profile.
Please let me know if this proves useful to you, or if you would like further assistance.
I'm looking forward to your reply.
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