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Unable to add my hotmail inbox to my yahoo account

Courtney McIver 0 Reputation points
2026-04-21T17:30:16.1866667+00:00

Hello,

I'm unable to add my hotmail email box to my yahoo account. I had to delete my cache because it was slowing down my computer. When I tried to re-add my hotmail email inbox to my yahoo account I received the message listed below. I had no problems prior to deleting my cache and search history.

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Outlook | Web | Outlook.com | Email
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  1. Alice-N 9,610 Reputation points Microsoft External Staff Moderator
    2026-04-24T08:18:03+00:00

    Hi Courtney McIver

    I understand you’re trying to add your Hotmail/Outlook.com mailbox back into Yahoo Mail after clearing cache/history, but Yahoo now shows: “Something went wrong… We could not sign you in. Try again from a different device.” Please confirm:

    • Are you adding Hotmail to Yahoo using Yahoo Mail’s “Add mailbox / check other mailboxes” feature (not adding Yahoo to Outlook)?
    • Can you sign in to the Hotmail/Outlook.com account directly at Outlook.com in a browser right now ?

    I would love to hear from you soon. Have a lovely day !

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  2. Q&A Assist
    2026-04-21T17:30:30.4033333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    Hotmail/Outlook.com accounts can no longer be newly connected and synced as “connected accounts” inside Outlook.com, and Microsoft has also removed the ability to connect new third‑party accounts (such as Gmail or Yahoo) from within Outlook.com.

    The context only confirms that:

    • Microsoft removed the ability to connect new third‑party accounts such as Gmail and Yahoo and to sync existing connected accounts from within Outlook.com.
    • To continue accessing other accounts while still using Outlook, Microsoft recommends using the options described in the article “Connected email accounts like Gmail and Yahoo not working in Outlook.com.”

    Because the error message shown is from Yahoo’s side and the connection flow is controlled by Yahoo, any sign‑in failure when trying to add Hotmail into Yahoo Mail must be resolved using Yahoo’s help and troubleshooting steps. The Microsoft documentation provided does not include a supported method or additional configuration on the Outlook/Hotmail side to make this specific Yahoo sign‑in error succeed.

    For Outlook.com/Hotmail itself, if mail send/receive issues occur directly in Outlook.com (not via Yahoo), use the Outlook.com troubleshooting guidance and interactive troubleshooter referenced below.

    References:

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