Outlook doesn't recognize my email username

Question

I lost access to my Yahoo email account from Outlook about 36 hours ago and have not been able to restore it despite many hours of effort. I deleted the account from Outlook, and when I try to add it back, I get a Microsoft message that says "This username may be incorrect. Make sure you typed it correctly. Otherwise, contact your admin."

I am 100% confident there are no typos.

When I try the "Can't access your account?" link

Please help.

Answer 1

The error in Outlook (“This username may be incorrect…”) usually means Outlook or Microsoft’s sign‑in service is not accepting the account identifier being entered, even if it is typed correctly. For a Yahoo account used in Outlook, focus on Outlook configuration rather than Microsoft account recovery flows.

Try these steps in order:

1. Confirm the account type in Outlook
   • When adding the Yahoo address in classic Outlook, ensure it is added as an IMAP/POP account (or via the Yahoo option if offered), not as a Microsoft 365 or Exchange account. Using the wrong account type can cause Outlook to reject the username.
   • For classic Outlook, if messages and folders are not syncing or the account type is wrong, remove the account and re‑add it with the correct type as described in Troubleshoot Outlook email setup.
2. Recreate the account profile in classic Outlook If using classic Outlook on Windows and the add‑account flow is behaving incorrectly:
   1. Open Control Panel → Mail.
   2. Select Email Accounts….
   3. On the Email tab, select New.
   4. Enter name and the full Yahoo email address, then the Yahoo password in Password and Retype Password.
   5. Select Next and follow the prompts until setup completes, then Finish.
3. Check advanced/IMAP settings if prompted
   • On the IMAP details page for a non‑Microsoft account (like Yahoo), make sure Require logon using Secure Password Authentication (SPA) is unchecked. Having SPA enabled can prevent Outlook from accepting otherwise correct credentials.
4. If Outlook mobile is involved
   • In Outlook for iOS/Android, if seeing a generic “check your email and password and try again” message, verify the username and password carefully.
   • If server details are requested, tap Show advanced settings and enter the correct mail‑server settings from Yahoo. If unsure, contact the mail‑server administrator (Yahoo support) for the correct IMAP/POP and SMTP settings.
5. If the error is from a Microsoft account sign‑in page
   • If the same Yahoo address is also used as a Microsoft account alias and Microsoft reports the username may be incorrect, use the Forgotten your Microsoft account username flow to confirm what Microsoft account(s) exist:
     1. Use the Search link under Look up a forgotten username using other information and enter the phone or alternate email associated with the Microsoft account.
     2. Request a security code, enter it, and review the username hint shown.
   • If Microsoft reports that the username cannot be found, or that the username has been turned off for sign‑in, follow the guidance in How to fix "This username has been turned off" error and sign in with a different alias that is allowed for sign‑in.

If none of the above works and the Yahoo account itself signs in correctly on the Yahoo webmail site, the issue is limited to Outlook’s configuration. In that case, switching to the new Outlook experience (if available) and adding the Yahoo account there can sometimes bypass issues seen in classic Outlook.

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References:

• Troubleshoot Outlook email setup
• [Exchange] Why do I get the message "Please check your email and password and try again"?
• Forgotten your Microsoft account username
• How to fix "This username has been turned off" error

Answer 2

Hi,

Please note that here in the Microsoft Q&A forum, we are fellow users and do not have access to accounts.

The error message saying "The account does not exist" usually appears when you enter an incorrect username or email address, the account has been compromised, or you haven’t signed in to your account for more than two years.

I understand that your last login was about 36 hours ago and that you have not deleted your account. If you're sure you typed the email correctly and your account has not been compromised, this may be an error.

I recommend following the step-by-step guide in the Microsoft link below to recover your account. If the issue persists, expand the section that says "If you still see 'We couldn’t find an account with that username'" and follow the instructions. This will also give you the option to contact support directly so they can properly investigate the issue.

https://support.microsoft.com/account-billing/my-username-and-password-have-stopped-working-802abb61-19db-4e88-a5ff-fc83c97d1a9d