Error 500: Repeating redirects detected - Outlook Online

Hudson 41 Reputation points
2021-02-09T01:04:08.587+00:00

Trying to access a mailbox through the Outlook online version. Been trying to find a working solution on the internet for 3 days now. Seems only non-chromium browsers work (Such as IE). Doesn't work on Edge, Chrome, Firefox, Brave etc. This issue only just appeared last Friday and didn't exist before. Haven't changed any settings whatsoever on the account. Account has Microsoft 365 Business Standard License I've tried: - Incognito/InPrivate - Clearing cookies/site data - Made sure system time was correct and in sync - On MS Word > File > Info > Access this account on the web - Updated Browsers ![65575-thumb-image001.png][1] [1]: /api/attachments/65575-thumb-image001.png?platform=QnA

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  1. Tuan, Pham Minh 291 Reputation points
    2021-06-24T06:37:26.107+00:00

    If your user is assigned too many roles, the Office portal can lose its cool and get into an endless redirect loop. By ‘too many roles’, I mean your Microsoft 365 user account has been assigned too many admin roles. Fortunately, this is an easy issue to resolve — depending upon how your Microsoft 365

    1. Click ‘Manage roles’ under the heading ‘Roles’
    2. Remove all admin roles other than ‘Global Administrator’ and click ‘Save changes’
    58 people found this answer helpful.
  2. Reza Molavi 31 Reputation points
    2021-08-13T22:03:42.34+00:00

    TuanPhamMinh,
    Thank you very much. You solved a problem no Microsoft tech has been able to solve for a year. I salute you.

    6 people found this answer helpful.
  3. Holly Palmer 15 Reputation points
    2023-02-03T18:40:22.57+00:00

    TuanPhamMinh,

    You are the BEST! This error has been causing me headaches for MONTHS, and no one at Microsoft could fix it. You solved my problem in less than 5 minutes. Thank you!

    3 people found this answer helpful.
    0 comments
  4. Jade Liang-MSFT 9,956 Reputation points Microsoft Employee
    2021-02-09T08:56:56.153+00:00

    Hi anonymous user,
    Welcome to our forum.
    For your error, I have researched a lot and found a similar thread, which mentioned changing the data/time settings in your computer may work for it, please check if it could also be helpful to you.

    If that's invalid, please kindly understand here we mainly focus on general issue about Outlook desktop client,considering your issue may be more related to your O365 account in browser, in order to solve it better, it's suggested to post a new thread in this dedicated forum.

    The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thanks for your understanding and hope your question will be resolved soon.

    If the response is helpful, please click "Accept Answer" and upvote it.
    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  5. Andrew 0 Reputation points
    2023-06-06T16:58:24.1766667+00:00

    One of our users ran into the same issue.

    There is no roles assigned to this user to begin with. It is probably an issue caused by server (Error 500).

    On Firefox browser this issue didn't occur. I just cleared browser history and so far there's been no issues on Microsoft Edge.