Unable to Outlook New bypass login to Yahoo to update server settings

Angela Artis 0 Reputation points
2026-09-04T00:17:17.98+00:00

Received invalid credentials originally. Cleared cache. Uninstalled Outlook. Restarted computer. Reinstalled Outlook. Attempted login multiple times. No Success. Attempted login with App pw. Still no success. Server info reverts back to cox.net versus yahoo.com

Outlook | Windows | New Outlook for Windows | For home
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  1. Vikki-T 9,585 Reputation points Microsoft External Staff Moderator
    2026-09-04T07:52:15.58+00:00

    Hi Angela Artis,

    I understand how confusing this is, especially after you have already cleared the cache, reinstalled Outlook, and tested both your regular password and an app password.

    At this point, I recommend that you review and try the steps provided in the AI generated answer on your thread. That reply typically include the most relevant checks for this scenario. 

    Since this is a Cox email address that may have been migrated to Yahoo Mail, seeing cox.net during setup does not necessarily mean that Outlook is using the wrong provider. The mailbox can still keep its original @cox.net address while Yahoo handles the sign-in and mail service.

    Could you please confirm the following?

    • Can you sign in successfully to Yahoo Mail in a web browser using your full @cox.net email address?
    • What exact error appears after you complete the Yahoo sign-in page?
    • Was this Cox account previously working in new Outlook, or is this the first time you are adding it?

    If the same credentials do not work on Yahoo Mail in a browser, the issue would need to be resolved through Yahoo/Cox before Outlook can connect. If webmail works but new Outlook still rejects the account, please share the exact error message shown after sign-in, while hiding your full email address and any personal information.

    Disclaimer: This is a third-party website provided for reference only. Microsoft does not guarantee the accuracy or reliability of the information, and Microsoft is not responsible for any changes, downloads, or actions taken through the website.

    You can also compare your account with Yahoo’s guidance for migrated Cox accounts: Update Cox.net email settings in Outlook and other email clients. Thank you so much for your understanding.   

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. Hornblower409 14,595 Reputation points
    2026-09-04T17:15:19.46+00:00

    @Angela Artis said

    Server info reverts back to cox.net versus yahoo.com

    I think I can help you get to where you can enter the Yahoo server settings. Not sure what else you may get hung up on.

    Migrated Accounts

    I developed a technique for comcast.net users who have been migrated to Yahoo. Not sure if this will work for cox.net. If it doesn't help, try the Full Manual Setup using a Yahoo App Password.

    New Outlook - Adding a Comcast Xfinity account that has been migrated to Yahoo
    See the Answer by "Hornblower409 Apr 23, 2026" in
    https://learn.microsoft.com/en-us/answers/questions/5868248/email-sync-error-on-new-comcast-email-account

    Full Manual Setup

    See the Answer by "Hornblower409 Jun 5, 2026", "New Outlook for Windows - Force Advanced/Manual Setup" at https://learn.microsoft.com/en-us/answers/questions/5912443/i-changed-hosting-provider-and-associated-dns-new

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  3. AI answer

    2026-09-04T00:17:34.5766667+00:00

    For new Outlook for Windows, the supported path is to remove and re-add the account rather than bypass the Yahoo sign-in screen to edit server settings directly.

    1. Open View tab > View settings > Accounts > Your accounts.
    2. Under Email accounts, remove the affected Yahoo/Cox account if it is already listed.
    3. Select Add Account.
    4. Enter the email address and select Continue.
    5. When prompted, enter the account password and complete sign-in.

    For new Outlook, some non-Microsoft providers such as Yahoo may require account changes on the provider side before the account can be added.

    If the account is being treated as a Yahoo-backed account, Outlook Desktop supports Yahoo OAuth, so an app password is not needed when Yahoo OAuth is available. In that case, sign in with the regular password, not the app password.

    If the account keeps reverting to old provider details or the sign-in flow does not complete, use classic Outlook / Mail in Control Panel to verify or update the incoming and outgoing server settings:

    1. Open Control Panel.
    2. Open Mail.
    3. Select Email Accounts.
    4. Select the affected account and choose Change.
    5. Check the Incoming mail server and Outgoing mail server values against the provider’s current settings.
    6. Under Logon Information, verify the correct User Name and Password are being used.
    7. If manually adding an IMAP account in classic Outlook, make sure Require logon using Secure Password Authentication (SPA) is unchecked.

    If Outlook never prompts for the password during IMAP setup in classic Outlook, create the account again from Control Panel > Mail > Email Accounts > New and complete setup there.

    References:

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

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