How to Fix Error Ox8004210B Microsoft Live Mail In Outlook

This article describes the Outlook Error Code 0x8004210B. It is Microsoft Outlook Error. This Error restricts your ability to send/receive emails on your Outlook email address successfully. This error is quite common and is faced with many Microsoft Outlook users.

Disclaimers:  Fixing an error on Outlook deals with your emails and attachments. Please backup your emails and it’s folders before you proceed. If you are not sure about the procedure, contact the technician for the support.


Outlook Error 0x8004210B

Causes of Outlook Error Ox8004210B:

  • Incorrect Outlook Configuration setting
  • PST files get corrupt
  • PST file crosses its fixed file size limit
  • Failure of POP3 and Protocol STMP in the database server connection
  • Improper synchronization between Outlook and the server
  • Usage of invalid password or username
  • Virus Infection

Symptoms of Outlook Error Ox8004210B :

  • “Error Ox8004210B ” appears and crashes the active program window.
  • Your PC frequently crashes with Error Ox8004210B when running the same program.
  • “Microsoft Outlook Error Ox8004210B ” is displayed.
  • Windows runs sluggishly and responds slowly to mouse or keyboard input.
  • Your computer periodically “freezes” for a few seconds at a time.

Solutions for Error Ox8004210B of Microsoft Outlook:

To fix the troubleshoot Outlook error Ox8004210B is the following three methods and explain them briefly.

Method 1: Fix System Integrity Issues

  • open Run Window and enter the Outlook/safe then click Ok then start Outlook in Safe Mode.
  • After that Open the Run Window and enter the cmd then click OK.
  • When the Command Prompt window opens, type SFC /scan now command and hit Enter.
SFC Scan
  • Now the system should run a scan for any system integrity issues. In case it finds any, it will get everything fixed automatically.

if this method did not help to remove Ox8004210B Error Code on Microsoft Outlook, then you should try the following methods.

Method 2: Use a System Repair Tool

In this method to check what is the core of the problem, we would highly recommend running a scan with a PC optimization tool, such as Regcure Pro

Method 3: Fix Windows Essentials

Microsoft indicates Windows Essentials 2012 damage as one of the Ox8004210B error causes. so try this,

  • Right Click on the Start button and enter the Control Panel then click it.
  • Navigate to the Programs and Features and find Windows Essentials 2012 on the list.
  • Right-click on it and select Uninstall/Change.
  • When a confirmation window shows up, option for Repair all Windows Essential Programs and wait until a confirmation window reporting about successful repair emerges.

Repair the Windows

  • Now close everything and try to login to your Microsoft Outlook account.

If the above methods to resolve the Outlook error Ox8004210B fails, then instead of wasting your time, it is better to switch to a third-party utility like Outlook Repair Tool which helps to fix the error codes without affecting the original data.

If you would like to have support taken through technical assistance, feel free to initiate a chat or write us on with the complete information of the computer make and model, office or windows operating system versions and the best time to reach you for support.
We provide support for Microsoft products like Windows and Office and Outlook, we can also set up free tools provided and included with Microsoft Windows and can train you on how to use them to maintain the health of your computer. You can also ask for System Repair Image support or some Recovery help, we also restore your computer to a point when it was working fine without any issues.
Feel free to chat with us for any support. Free assistance can be provided for all the basic troubleshooting without any additional resources.
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