How to Fix Microsoft Outlook error 0x80040206

Solution 1: Make Sure You Are Connected to the Internet 

First, you are seeing Outlook error code 0x80040206, it is recommended to check your internet speed. You can’t send or receive emails because your connection is down, or you don’t have an internet connection. To check if the system is online, follow these steps:

1. First, open a web browser in a computer window.
2.  Type one of the following addresses in the address bar and press Enter on your keyboard.
   • http://www.microsoft.com/
   • http://www.msn.com/
3. If you can access the site, it means that the internet is connected to the system.

       If you’re still having problems connecting to the Internet, see Troubleshoot network connection problems in Internet Explorer.

 Solution 2: Repair your Outlook

 Open the Start menu and click on the Settings icon to open the Settings app. If the Start menu is not opening, use the Windows logo + I hotkey to open the Settings app.

 Step 2: In the Settings app, go to Apps > Apps & features page to view all installed desktop programs as well as apps from the Store.

 Step 3: Look for an Office 365 entry, click on it to reveal Modify and Uninstall buttons, and then click the Modify button.

 Step 4: Upon clicking the Modify button, you will see the User Account Control prompt where you need to click the Yes button to see the following dialog with Quick Repair and Online Repair options.

 As the dialog says, Quick Repair fixes most of the issues and doesn’t require an internet connection. The Online Repair feature fixes all issues, but requires an internet connection. The Online Repair is similar to reinstalling Office 365 as it requires you to activate your copy of Office after the repair job. We recommend Online Repair only if an issue persists even after trying Quick Repair.

 Also, you might lose your Office customization and settings if you opt for Online Repair.

 If you click the Quick Repair option, you will see the following confirmation box where you have to click the Repair button to begin repairing your Office 365 installation on Windows 10.

 And if you choose the Online Repair option and click the Repair button, you will see a confirmation dialog where you need to click the Repair button to begin downloading and installing a fresh and latest version of Office 365 on your PC. Depending on your internet connection speed, the time required to complete Online Repair might vary from a few minutes to hours.

 Once the Online Repair is done, you will see Office is installed now message.

 Once done, launch any Office program such as Word, enter your email address, which you used to purchase an Office subscription to activate your copy of Office 365 on Windows 10. If you have a product key, you can enter the same by clicking Enter a product key instead link.

 Solution 3: Update O365 to the latest version.

 To update the suite of Office apps to the latest version, use these steps:

 Note: The interface may look slightly different depending on the version of Office that you're running, but the steps are the same.

1.  Open an Office app. For example, Word.
2.  Create a new blank document.
3.  Click on File.
4.  Click on the account.
5.  On the right side, click the Update Options menu.

6.  Click the Update Now option.

    Continue with the on-screen directions to apply new updates (if applicable).

 Once you've completed the steps, Office will download and install any available updates for your apps.