Brilliant Hacks To Resolve MS Outlook Error 0x8004210a

Microsoft Outlook is preferred by numerous users across the globe for its seamless functionality and ease of use.

However, this email service often suffers from the security settings which results in Outlook error 0x8004210a.

This error code usually occurs due to varying Outlook settings or the protocols that could be made automatically or after the regular operating system upgrades.

So, if you are one of those unfortunate and wondering for some permanent solutions to terminate this error, then let’s move to the point on how to fix this Outlook error.

In this informative guide, we have discussed all the probable reasons and the prime solutions to get rid of this error code at the earliest.

Primary Causes for Outlook Error 0x8004210a:

If you are encountering Microsoft Outlook error 0x8004210a on your computer, then there might be several causes behind this issue.

This issue mainly occurs due to slow connectivity issue with the exchange server on your Outlook profile.

Firewall settings or the incorrect settings in the Outlook profile is another cause for this issue.

If the Outlook data goes corrupted or is missing, then it might also be the cause behind the occurrence of error code 0x8004210a.

However, in the next section, we have provided enough effective solutions to terminate this issue.

Premium Solutions to Fix Outlook Error 0x8004210a:

Here we are presenting all the effective solutions to terminate this Microsoft Outlook error 0x8004210a in a flicker of time.

You can try any of these solutions or all the methods discussed below until you have the error code 0x8004210a resolved permanently.

Method 1: Expand the Server Timeout Limit on your Outlook Service

If the server timeout is too low except its original value, then it will start sending duplicate emails and start behaving abnormally itself.

You need to expand the server timeout limit on your Outlook account in order to get rid of this error code.

Here are some steps mentioned below to do so.

1. At first, turn on your computer and launch an accurate web browser that you are using.
2. Launch the Outlook and enter the login ID and the Password to get into the service.
3. Now, drive to the Account Settings from the File tab from the upper-right corner of the screen.
4. After that, select the Advanced option from the upper tabs on the screen and click on the Change option.
5. Click on the More Settings option from the bottom of the results and then a meter box will appear on the next screen.
6. Set the SMTP value as 25 and the Server Timeout value as 1 minute from the bottom of the screen and click on save.

After successfully expanding the timeout on your Outlook, relaunch the application and see if the error code is now fixed.

If still, you are encountering the issue or the above method fails, try another solution stated below.

Method 2: Repair the Whole Outlook Tool on your Computer

In case, you are encountering the Outlook error code 0x8004210a, then there might be some faults that can be eliminated by repairing the Outlook application.

Perform the steps given below in order to accomplish the task.

1. At first, turn on the computer and type Control Panel into the Windows Search pane to invoke the action.
2. Drive to the Uninstall Program option from the left side of the screen and click on that.
3. After that, select the MS Suite option from the application list and right-click on that.
4. Select the Repair option from the list and a pop-up window will appear on the next screen.
5. Now, follow the on-screen instructions to repair the MS Outlook service from the web.

At last, restart the computer and see if the error code 0x8004210a is now terminated from Outlook.

If still, you are getting this issue or the above method doesn’t aid, you can try one more solution discussed below.

Method 3: Use the Windows System Restore to Undo the Recent System Changes

Windows System Restore is an in-built feature that allows the PC to go back in time and resolve several issues including the Outlook error code 0x8004210a. 

Go through the below steps in order to accomplish the task.

1. At first, turn on the computer and click on the Windows logo to invoke the Search pane.
2. After that, type System Restore into the search pane and tap the Enter key to open the action.
3. Now, click on the System Restore option and enter the password if prompted.
4. After that, select the Restore point from the wizard and click on the Continue button to complete the Restore procedure.

After successfully restoring the computer, restart the computer and see if the Outlook application is running good as earlier. 

If the Outlook server is still unavailable, try another solution listed below.

Method 4: Change the Server Port Number in Outlook

Server port number is an essential factor behind this error code. If you have changed the port number mistakenly or the number changes itself, then it will result in this error code.

Here are some hacks that will change the server port number on Outlook.

1. Open the Outlook service and enter the Email ID and the Password to get into the service.
2. Now, locate the File option from the top of the homepage and click on that.
3. After that, select the Tools option and click on the Account Settings.
4. Click on the Email tab from the Account Setting window and select the Email account from the list.
5. After that, click on the More Settings option on the next screen and then an Internet Email Setting window will open.
6. Now, open the Advanced tab from the very top of the screen and change the Outgoing Server Port Number to 587.
7. Click on the OK button below the screen and then click on Apply to save the changes.

Now, restart the Outlook service, once you are completed with all the above steps accurately.

See if the MS Outlook error 0x8004210a is now settled. If still, you are encountering this error or the error code is not fixed yet, try a different solution below.

Method 5: Update Outlook Application Manually on your PC

If all the above methods fail, then updating the Outlook service is the only hope to retrieve the Outlook service back as earlier. 

Go through the steps cited below to update the Outlook on your Windows.

1. First of all, turn on your computer and double-click on the Outlook application to launch it.
2. After that, locate the Outlook icon looks like “O” from the top of the screen.
3. Now, select the Update option at the bottom of the list and click on Check for Updates.
4. After that, the computer will start checking if there any latest version available or not.
5. At last, click on the Download button and install the application manually after the download completes.

After successfully installing the latest version of the application, restart the computer. You will find that you are no longer affected by any issue regarding the Outlook error code 0x8004210a.

Bottom Lines

In the above discussion, we have provided all the simple tricks to resolve the Outlook error 0x8004210a and also covered the most common reasons due to which this error will occur.

Hope the above article was successful enough to assist you on how to terminate Microsoft Outlook error 0x8004210a in minutes.

In case, the error code still prompts, then there might be some other software issue or the server faults and you should consult with a professional to escape from this Outlook error.

Moreover, if you found some other solutions to settle this error, you can share your experience here in the comment section below.