Can't sign in outlook Server Error: 401:undefined|undefined:undefined

Anonymous

UTC Date: 2025-07-10T00:19:57.157Z
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: KL1PR01CA0055

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46 answers

Anonymous

2025-07-10T10:13:03+00:00

I am having this problem as well. Does anyone know what causes this? I got it after I tried to my outlook account to my iPad.
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Anonymous

2025-07-10T09:29:34+00:00

Got the same question l, please do check
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Anonymous

2025-07-10T09:10:07+00:00

I have this problem too! so Annoying! Can someone help me fix it?
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Anonymous

2025-07-10T09:02:20+00:00

how did this resolve for you?
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Anonymous

2025-07-10T08:58:42+00:00

Same issue here. No ability to contact using phone and online chat function is down so no support from Microsoft at all
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