Office 365 : enable basic auth temporarily ?

Eric 25 Reputation points
2023-05-11T12:21:22.7833333+00:00

Hi everyone,

Since January 1st, Microsoft has completely removed the basic auth from its Office 365 Exchange. Only I'm stuck in a mail migration because for the moment I have no other choice than to use this basic auth.

Is there a way to temporarily re-enable it for only one user? Either via the Office 365 interface or in Powershell? Or another alternative ?

On a similar topic, one eprsone indicates that she was able to do this but I don't understand the steps she describes (API ? ) : https://learn.microsoft.com/en-us/answers/questions/691245/ews-401-unauthorized-fails-at-new-mail-item-365-ex

Thanks, Eric

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  1. Jarvis Sun-MSFT 10,176 Reputation points Microsoft Vendor
    2023-05-12T06:25:43.21+00:00

    Hi @Eric ,

    Agree with Vasil Michev said, Basic authentication is permanently disabled on October 1, 2022. Now that the date has passed, you (or support) can't re-enable Basic authentication in your tenant.


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  1. Vasil Michev 98,196 Reputation points MVP
    2023-05-11T16:29:19.54+00:00

    Nope, that ship has sailed. You can always open a support case to confirm, but prepare to be disappointed.