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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2023-04-24T22:05:41+00:00

    Thanks for the idea. Sadly after trying this …no change. Even re-installed Office and no change.

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  2. Anonymous
    2023-04-24T21:57:06+00:00

    I am having this same issue. I have multiple email accounts that I access through Outlook on my PC. One of them, an actual @outlook.com account, is repeatedly throwing this error. I believe it began after a Windows update. I have not been able to send/receive email on this one particular email account since 4/4/23 yet all of my other email accounts have been just fine. I have reset my password and I continue to send/receive emails on all accounts on my iPhone, but need to be able to do so on my PC, as well. I've also done a system restore to a point prior to the Windows update, but to no avail. I cannot use the Microsoft Support and Recovery Assistant tool as it tells me I am not eligible (?). Tried steps to log in as Administrator, however I still receive the same error message. Please advise asap as I need this account to function properly on my PC.

    JH

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  3. Anonymous
    2023-04-16T04:14:35+00:00

    I was also getting this error.

    Attempted to use the Microsoft Support and Recovery Tool, and was exited on a screen that said it didn't support this type of account.

    Account is current and up to date

    Additional info: After you close the screen shown in Anand's original post, you get this.

    Jinky Fix - Opened outlook from the Start Menu as Administrator (Right click on application and choose Run as Administartor), application opened and ran perfectly. Note: There were a couple more clicks after choosing to run as administrator... I don't remember what they were, but the are common sense answers.

    It Works - Closed application and re-opened it from my pinned shortcut and application runs perfectly. Fixed for now!

    Jay

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  4. Anonymous
    2023-04-15T23:04:45+00:00

    Same here. I started getting the same error after an update on Friday, April 14. I get authentication prompt and then the 2400 error. The account I'm being prompted for hasn't picked up any new emails since before the update.

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  5. Anonymous
    2023-04-14T07:35:26+00:00

    Hi There

    I am getting the same error. Its an irritation but doesnt stop me using the application.

    I get the same error when opening in safe mode. Tried running ms support and recovery assistance and outlook wouldnt open at all.

    Any ideas?

    Matt

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