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Outlook Something went wrong Error

Neon Lee 130 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
Microsoft 365
Microsoft 365
Formerly Office 365, is a line of subscription services offered by Microsoft which adds to and includes the Microsoft Office product line.
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Outlook
Outlook
A family of Microsoft email and calendar products.
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Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Faery Fu-MSFT 18,796 Reputation points Microsoft Vendor
    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".

    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.

    1 person found this answer helpful.

33 additional answers

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

    same issue

    1 person found this answer helpful.
    0 comments
  2. 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
  3. 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.
  4. 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.

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