Outlook Email Error Message 0x8004210e

What is Outlook Error 0x8004210e?

The Outlook error 0x8004210e occurs when there is an issue with the configuration of the outgoing mail server (SMTP). It indicates that the recipient's email address is wrong or your mailbox is busy and temporarily unavailable. Below the user on a web host forum has faced the same error 0x8004210e with his outlook. Come let’s understand what causes this Outlook mail error 0x8004210e in the next section.

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I can’t seem to login to my email, not sure if I have reached the limit. I can send emails ok but can’t receive them. I’m getting this from Outlook…

Task ‘[email protected] - Receiving’ reported error (0x8004210E): ‘Your mailbox is temporarily unavailable because another e-mail message is being delivered to it or another mail application is accessing it. The server responded: -ERR [IN-USE] Temporary authentication failure.’

Source: Webhost Forum

Table of Contents:

Understanding the Error

How Do I Fix Outlook Error 0x8004210e?

Fix Corrupted Outlook Data File Using the Yodot Outlook PST Repair tool

Additional Tips and Considerations

Conclusion

Understanding the Error:

The Outlook mail server is temporarily unavailable.
Outlook PST files will be Corrupted/damaged.
Improperly installed Outlook application.
Errors related to mail account settings can corrupt PST files.
Damaged User profile and email item on the POP server.
Unnecessary email message accumulation on the server.
Unintentionally deleting PST source files.

How Do I Fix Outlook Error 0x8004210e?

The outlook send and receive error 0x8004210e may be caused by Outlook data file corruption. So, I suggest you guys use a professional Outlook PST Repair tool like Yodot to repair the corrupted Outlook data file that lead to a temporary mailbox Outlook issue.

yodot-outlook-pst-repair-review

Fix Corrupted Outlook Data File Using the Yodot Outlook PST Repair tool

The Yodot Outlook PST Repair tool will help you to repair corrupt Outlook data files with its advanced repair methodology. You can even repair severely corrupted Outlook data files using the tool. Download and try the tool now for free.

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Step-by-step process to use the tool:

Install the Yodot Outlook PST Repair tool on your Windows system to repair the corrupt Outlook Data File which might be caused by 0x8004210e error.
On the main screen click on Open PST File - if you know the location of the PST file (or) click on Find PST File - if you can’t find the location of the PST file (or) Select Outlook Profile - if you have multiple Outlook profiles.

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Hit Normal Scan for a minor corruption (or) if the corruption is severe Tap on Smart Scan, choose a location to save the healthy PST file, and click on Repair Button

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Once the repair process gets over, the tool will display the recovered items in an Outlook-styled interface.

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Select the items and click on Save

Additional Tips and Considerations:

Always keep the updated version of Outlook this might “avoid your mailbox is temporarily unavailable because another email message is being delivered to it” error.
Disable the antivirus and firewall, the Outlook email error message 0x8004210e may be caused by the antivirus and firewall on your PC.
Take a regular backup on the external storage device, if in case you face an error like this in the future you can access still access your data.

Conclusion:

Use the article effectively to fix the 0x8004210e error in Outlook. Also, you can use the Yodot Outlook PST Repair tool to fix corrupted outlook data file which might be caused by send receive error like 0X80070057. Bookmark this page for future use.