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
    2023-07-01T20:37:29+00:00

    This worked for me!

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    3 people found this answer helpful.
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  2. Anonymous
    2023-07-03T12:06:36+00:00

    This worked for me!

    Brilliant

    Just switching back and forth between accounts (I have 2 Exchange accounts) fixed it in 2 seconds.

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  3. Anonymous
    2023-07-04T08:21:55+00:00

    I only had a problem with ONE of the outlook accounts. The free one. (other is attached to 365)

    Error 2400 - So, I have the same problem. I have two outlook/hotmail accounts, one attached to 365 and one is free. The free one isn't working anymore.

    I m not ready to do all this reinstalling and registry stuff, cause its so much wasted time. Instead, I would prefer, that Microsoft is getting their sh*t together and make an update for that. This thread is long enough, that several people have that problem. And thats only the people, who made a post to this topic. I pretty sure MS broke something with the last update and now a lot of people with this account constellation have that problem.

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  4. Anonymous
    2023-07-10T15:30:43+00:00

    I have the same problem.

    I have two accounts, but switching back and forth did not help me.

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  5. Anonymous
    2023-07-11T16:25:09+00:00

    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.

    Thanks a lot, this worked.

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