This post fromMiniToolprovides some useful solutions.

The Microsoft something went wrong 2400 error code in Outlook prevents you from accessing your emails.

It usually happens after installing Windows updates and Outlook updates.

Microsoft Office 2024 Preview Download & Installation

The following provides some useful methods.

Microsoft plans to release Microsoft Office 2024.

This post introduces Microsoft Office 2024 Preview download and other details.

click Switch account

You just need to right-click theOutlookapplication to chooseRun as administrator.

Step 1: Launch theOutlookapplication.

Most likely it is not, you better add and sign in it.

remove the account that encounters the issue

Step 4: you might switch back to your original account after you added the affected email address account.

Here is how to do that:

Step 1: TypeControl Panelin theSearchbox.

Then, clickMail (Outlook account).

choose Quick Repair or Online Repair

Step 2: Then, click theEmail accounts…option.

Step 3: snag the account that is creating a problem and then clickRemove.

Step 4: Now reboot your Outlook to add the account again.

How to Uninstall Outlook on Windows/Mac? Follow the Guide Below!

Fix 4: Repair Office 365

Microsoft provides an effective built-in quick repair tool to repair Office.

Step 1: TypeControl Panelin theSearchbox.

Step 2: Click theUninstall a programbutton underPrograms.

Step 3: Find and right-smack the Office software to selectChange.

Step 4: ChooseQuick RepairorOnline Repairbased on your situation according to the on-screen instructions.

How to uninstall Outlook on Windows/Mac?

This post provides detailed steps for the uninstallation.

Now, continue to read this post to get more information.

To download and use it, refer to this post Download/Use Microsoft Support and Recovery Assistant (SaRA).

To back up Windows OS and files, you could use MinTool ShadowMaker aprofessional and free PC backup tool.

If you are bothered by this error, go to follow these methods to get rid of the trouble.

Besides, you could back up your important data regularly.