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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. Justin Zimmerman 5 Reputation points
    2023-06-27T18:08:42.49+00:00

    Multiple end users having same issue. This is definitely still an issue.

    Setup on outlook desktop app works fine.

    1 person found this answer helpful.

  2. Steve Johnson 5 Reputation points
    2023-06-27T18:03:41.09+00:00

    I am having the same issues on Outlook desktop and online.

    The Outlook app on my IPhone is still working.

    1 person found this answer helpful.

  3. cat sandlin 30 Reputation points
    2023-06-27T18:02:35.7366667+00:00

    issue not resolved. microsoft developers are daft if they think its 'fixed' and telling people that.

    using Cloudflare settings, reset DNS/flushed, change ipv4 and ipv6. tried disabling both one at a time. reset browsers.

    then stopped. outlook apps and email clients work.

    its OWA on different browser, devices, and networks. same error.

    it sure would be a whole lot cooler if y'all stop telling people its fixed when it isn't. =)

    1 person found this answer helpful.
    0 comments No comments

  4. Astor Velazquez 5 Reputation points
    2023-06-27T18:01:41.38+00:00

    same issue

    1 person found this answer helpful.
    0 comments No comments

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