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Outlook Something went wrong Error

Neon Lee 135 Reputation points
2023-06-25T07:38:44.05+00:00

My Outlook Client For Windows can be used, but using outlook on the web, 500 error( something went wrong) happens.

BootResult: fail
Back Filled Errors: None
err: System.MissingMethodException
esrc: StartupData
et: ServerError
estack: Error: 500
st: 500
ehk: X-OWA-Error
emsg: ErrorUnexpectedFailure
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Answer accepted by question author
  1. Faery Fu-MSFT 19,861 Reputation points Moderator
    2023-06-26T07:13:10.3933333+00:00

    Hi @Neon Lee ,

    Based on my research, this may be related to the incident below, which has now been fixed. Please try again to see if it works for you.

    Screenshot 2023-06-26 150507


    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

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    1 person found this answer helpful.

33 additional answers

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  1. Anonymous
    2023-06-27T18:24:52.52+00:00

    I am also having the same issue. But the Outlook app on my pc and cellphone works. Just the outlook web. I have tried a lot of troubleshooting, nothing works. Internet is also okay. I have also tried other browsers and clear caches. My other colleague does not have the same issue, just me. I have called out IT dep and said there is nothing wrong on their end.

    From : Oriental Mindoro Philippines

    0 comments No comments

  2. Jackson Berry 0 Reputation points
    2023-06-27T18:21:12.11+00:00

    I'm struggling with this as well: Screen Shot 2023-06-27 at 2.19.57 PM


  3. FSomers1234 0 Reputation points
    2023-06-27T18:18:32.44+00:00

    Same issue for me. All other MS Web apps working (e.g., SharePoint, Forms, Power Automate). Just web Outlook.

    User's image

    0 comments No comments

  4. Rumen Avramov 20 Reputation points
    2023-06-27T17:57:00.03+00:00

    To whom it may concern,
    We started facing the same issue. We already got multiple calls today.
    May be it is coincidence but it is only on 15.20.6521.31.
    Please, provide us with an ETA so we can accommodate the end-users with the proper service!
    Thank you very much in advance!

    0 comments No comments

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