How to Fix Outlook Error 0x8004210A : Troubleshooting Guide

Introduction of Outlook Error 0x8004210A:

Outlook Error 0x8004210A is a common error that occurs when Outlook fails to connect to your email server. Which including:

• A problem with your internet connection
• Incorrect email account settings
• A problem with your firewall or antivirus software
• A corrupted Outlook profile

Outlook is one of the most widely used email clients, but like any software, it can encounter errors from time to time. One common error that users may come across is Error 0x8004210A. This error typically occurs when sending or receiving emails in Outlook and can be quite frustrating. In this article, we will guide you through the process of fixing Outlook Error 0x8004210A.

Step 1: Check Your Internet Connection:

Before diving into more complex troubleshooting steps, it’s essential to ensure that your internet connection is stable. A weak or intermittent connection can cause issues with Outlook’s functionality. Try visiting a few websites or running a speed test to confirm that your internet connection is working correctly.

Step 2: Disable Firewall and Antivirus Temporarily:

Sometimes, firewalls and antivirus software can interfere with Outlook’s connection to the mail server, leading to Error 0x8004210A. To rule out this possibility, temporarily disable your firewall and antivirus software. Remember to re-enable them once you have completed the troubleshooting process.

Step 3: Verify Email Account Settings:

Incorrect email account settings can also trigger Outlook Error 0x8004210A. To verify and update your email account settings, follow these steps:

1. Open Microsoft outlook and go to the “File” tab.
2. Click on “Settings” and select “Account Settings” from drop-down menu.
3. In the “Email” tab, select your email account and click on “Change.”
4. Verify the incoming and outgoing mail server settings with your email provider. Double-check the server names, port numbers, and authentication settings. Make any necessary corrections and click “Next” to proceed.
5. After making changes, restart Outlook and check if the error is resolved.

Step 4: Increase Server Timeouts:

Outlook Error 0x8004210A can occur if the server timeout settings are too short. To increase the server timeouts, perform the following steps:

1. Open Outlook and go to the “File” tab.
2. Click on “Account Settings” and select “Account Settings” from the drop-down menu.
3. In the “Email” tab, select your email account and click on “Change.”
4. Select the “More Settings” button and go to the “Advanced” button.
5. Increase the server timeout value by moving the slider or entering a larger value in the appropriate field.
6. Click “OK” to save changes and restart Microsoft Outlook.

Step 5: Repair Outlook Data Files:

Corrupted or damaged Outlook data files can also trigger various errors, including Error 0x8004210A. To repair the Outlook data files, follow these steps:

1. Close Outlook if it is running.
2. Open the Control Panel on your computer and search for “Mail” or “Mail (32-bit)” (depending on your operating system).
3. In the Mail Setup dialog box, click on “Data Files.”
4. Select your Outlook data file (usually named Outlook.pst) and click on “Open Folder.”
5. Make a backup copy of the Outlook data file in a separate location.
6. Launch the Inbox Repair Tool (scanpst.exe) from the Outlook installation directory. It can be found in the locations:
   • Outlook 2019: C:\Program Files (x86)\Microsoft Office\root\Office16
   • Outlook 2016: C:\Program Files (x86)\Microsoft Office\Office16
   • Outlook 2013: C:\Program Files (x86)\Microsoft Office\Office15
7. Run the Inbox Repair Tool and select the Outlook data file you want to repair. Click on “Start” to begin the scanning and repair process.
8. Once process complete, restart Outlook and check if the error persists.

Here are some additional tips that may help you fix Outlook Error 0x8004210A:

• Try using a different email client, such as Gmail or Yahoo Mail.
• If you are using a POP3 account, try switching to IMAP.
• Update your antivirus software to the latest version.
• Clear your Outlook cache and temporary files.
• Reinstall Outlook.

Conclusion on Outlook Error 0x8004210A:

Outlook Error 0x8004210A can be resolved by following the troubleshooting steps mentioned above. Start by checking your internet connection and disabling any firewall or antivirus software temporarily. Verify and update your email account settings, increase server timeouts, and repair any corrupted Outlook data files. If the error persists after completing these steps, it is advisable to seek further assistance from Microsoft support or your email service provider.