Unable to access my Outlook/hotmail email account. Error 401- RESOLVED

TeresaM 370 Reputation points
2025-07-10T05:49:26.7866667+00:00

Something is wrong with my personal email account, as other members of my family are able to access their Outlook email accounts. When I try to log on to Outlook (hotmail) on my phone or on my PC, I receive the following error message. I need to be able to access my emails. Please advise on how I can resolve this. I have already reset my password and cleared my cache and history.

UTC Date: 2025-07-10T05:33:04.707Z
Client Id: 8798D6BD74FF43679B325E07B4F542E7
Session Id: 85f3e46d-11d3-463d-bf21-b26d2fb91ceb
Client Version: 20250620014.20
BootResult: fail
Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined
err: Error: 401
esrc: StartupData
et: ServerError
estack: Error: 401
    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:1039)
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.ad3a7e4e.js:1:161561
st: 401
efe: PH8PR20CA0019
Outlook | Windows | Classic Outlook for Windows | For business

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Answer accepted by question author
MER 270 Reputation points
2025-07-10T10:31:01.1633333+00:00

I have spoken with Microsoft this AM via live chat and its a known issue which is effecting some users. They are working on the issue and hope to have it resolved asap

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60 additional answers

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  1. Michaël Blais 0 Reputation points
    2025-07-10T16:00:23.9133333+00:00

    Same problem here...

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  2. Michelle Sharp 0 Reputation points
    2025-07-10T16:01:44.7633333+00:00

    Error 401-- Seems to be an issue for quite a few people. Outlook needs to get this fixed ASAP. I have VERY IMPORTANT emails that need attended to on a timeline. It worked fine yesterday. This morning...nothing. I refreshed. Cleared my history/Cache. Restarted my computer. Tried my phone and another computer. Hopefully they get this resolved before day end.

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  3. JCS-3583 0 Reputation points
    2025-07-10T16:04:20.3366667+00:00

    Client Version: 20250704003.04

    BootResult: fail

    Back Filled Errors: Unhandled Rejection: Error: 401:undefined|undefined:undefined

    err: Error: 401

    esrc: StartupData

    et: ServerError

    estack: Error: 401

    at Object.w [as createStatusErrorMessage] (https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:1039)
    
    at https://res.public.onecdn.static.microsoft/owamail/hashed-v1/scripts/owa.mailindex.5ec1239e.js:1:163185
    

    st: 401

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  4. D Stewart 5 Reputation points
    2025-07-10T16:04:45.64+00:00

    Hey Everyone GO TO: Microsoft's Service Status page. That page states what services are temporarily Out.... Outlook is in the RED

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    1 person found this answer helpful.