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
    2023-09-02T05:07:27+00:00

    I think Microsoft has updated something at their end for account verification, and Outlook now can't cope with personal Microsoft accounts.

    My set up: Windows 10, Office 365 accounts, Hotmail account that stopped working

    What worked for me was

    1. Close Outlook
    2. Go to Windows --> Settings --> Accounts --> Email and Accounts --> Select the Hotmail or other personal account

    --> Click Manage

    --> Change option to "Microsoft apps can sign me in"

    1. Restart Outlook.

    Hope that helps!

    Sifet

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  2. Anonymous
    2023-09-01T04:47:30+00:00

    Thank you! I have been fighting with this for hours. The link you provided led to a solution that involved deleting a registry entry.

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  3. Anonymous
    2023-08-18T12:29:09+00:00

    Not sure if this helps anyone else but I was able to resolve the problem by switching to the "New" Outlook Version. Microsoft Outlook Version 1.2023.807.100, Client Version is 20230804005.15 .

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  4. Anonymous
    2023-08-15T16:35:20+00:00

    I had already tried this, I've repeated it, but still hasn't solved the issue.

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  5. Anonymous
    2023-04-26T12:00:13+00:00

    Same issue since yesterday...

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