Getting 2400 error in outlook application

Anonymous
2023-04-11T09:25:43+00:00

Hi,

Something went wrong [2400] error in outlook application. Web outlook is working fine.

Tried outlook repair, reinstallation, new profile creation and cleared password from device credential manager still issue persist. Seems like Microsoft issue. Screenshot attached

Please share any troubleshooting steps for permanent fix

Thanks

Anand

Outlook | Windows | Classic Outlook for Windows | For home

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  1. Anonymous
    2023-06-12T18:57:07+00:00

    As of today, 6/12/23, I cannot open Outlook without getting the "ERROR, something went wrong [2400]" message.... won't accept my password, won't open Outlook. Other 365 apps, Excel and Word, pop up the error message box but I can close that out and the apps will open and I am able to open and use files. Have tried uninstalling an re-installing 365 several times (definition of insanity) with no different outcome. REALLY NEED to use my Outlook. Fix it Microsoft.

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  2. Anonymous
    2023-06-12T15:30:13+00:00

    This worked (copying another reply)

    I had the same issue, but I managed to fix it.

    On Outlook application, go to File > Office Account, check whether your affected email address is signed in under Account (on the left side).

    If it is not, then try click Switch account and check whether your affected email address account is there.

    Most likely it is not, just add and sign in and it should be fixed.

    You can switch back to your original account after you added the affected email address account.

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  3. Anonymous
    2023-06-02T19:50:52+00:00

    This worked! Thanks!

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  4. Anonymous
    2023-06-01T14:03:46+00:00

    Thank you ..... after hours of trying to resolve this and rubbish responses from Microsoft, you manage to fix the issue with a few simple clicks :-)

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  5. Anonymous
    2023-05-25T18:11:32+00:00

    it works, thank you very much!!!

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