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error- AADSTS165000

vincenta leyden 20 Reputation points
2026-04-18T13:49:49.73+00:00

I have this issue: need help:

Outlook mobile sign in error- AADSTS165000

Microsoft Edge | Other | iOS
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Answer accepted by question author

  1. EmilyS726 228.2K Reputation points Independent Advisor
    2026-04-18T14:23:32.52+00:00

    Hello

    I need more info please -

    Is this on your iPhone only ?

    What exactly are you signing into, a certain website? Or app?

    Are you using a work/school assigned account?

    Can you provide the full error message - typically there's information after that AADSTS error code, can you share that part as well please. Thanks!


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  1. vincenta leyden 20 Reputation points
    2026-04-20T10:47:02.0066667+00:00

    Actions already completed:

    • Reset Network Settings
    • Reset All Settings
    • Reset Location & Privacy
    • Cleared saved passwords/credentials
    • Deleted and reinstalled Outlook
    • Restarted device

    Outcome:

    • Issue persists on clean setup
    • Appears isolated to this device (iOS authentication layer)

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