Outlook error 0x8004210a might seem to you just another error. However, it is quite complicated and can become one of the reasons for your low productivity. The error is seen with a message that states: “The Operation timed out while waiting for a response from the receiving server.” You might see this error because the user profile you’re using is corrupted or damaged, or the email account settings you’ve used are incorrect.

The Outlook error 0x8004210a can be seen when you want to synchronize large number of emails, or the email server is temporarily down. Move forward, and let's discuss what the reasons for this error are and how to fix it.

Common Reasons for the Outlook Error 0x8004210a

We can say that when any Outlook user encounters the POP Server Timeout Error 0x8004210a, these three primary reasons are majorly noticed:

  • Existence of any antivirus program might be disrupting the standard connection attempts for MS Outlook.
  • Active Windows Firewall could pose as a hindrance to the normalized MS Outlook Send/Receive process.
  • Improper configurations in the time-out settings of Exchange Server.
  • Incorrect specification of port numbers in the MS Outlook email client.

Fix Outlook Error 0x8004210a - Best Troubleshooting Tips

When you are aware of the reasons behind the 0x8004210a error, you can rectify these issues by applying some methods that are mentioned here:

  • Check the Internet connectivity: Your first reaction should be checking whether the Outlook application connects to the Internet or not. Because Outlook is able to work in the Offline mode, users can keep working on it without checking the Internet. If Outlook is working without Internet, then there will be no transfer of emails.
  • Remove suspicion emails from your Outlook mailbox: The infected emails in your mailbox can hamper the performance of the whole Outlook application. They can stop the application from sending out or receiving emails. If you are aware of such emails, then delete them as soon as possible.
  • Disable your anti-virus program: If there is integration between your anti-virus program and the Outlook, then the anti-virus can affect the performance of the Outlook. To stop the interference of anti-virus software, then disable it from scanning the Outlook emails.
  • Delete the older account and create a new one: If the account is damaged beyond repair, then you do not have other option but to delete the older account and create a new one. You can also create a new account through the Control Panel Settings.
  1. Close Outlook and open the Control Panel.
  2. Click Mail (Microsoft Outlook 2016).
    3. Mail (Microsoft Outlook 2016)
  3. Click Email Accounts.
    4. Email Accounts
  4. Click New and create a new account’s credentials.
    5. Click New and create a new account’s credentials

After creating the account again, try to send some test emails to other account to test the connection.

Fix email server settings to resolve Outlook Error 0x8004210a

Apart from these common troubleshooting steps, if things are still as they are, then configure the accurate port numbers and server time-out settings. Proceeding further, the server timeout error 0x8004210a pops up when the Send/Receive operation couldn't be completed within the configured timeout limit. Adding into it, you should also check the port number settings for POP (Post Office Protocol) as the values of POP port no. differ when you configure SSL encryption settings.

Let's take these two preceding troubleshooting tasks one by one to fix Outlook timeout error 0x8004210a:

To Configure Time-Out Server Settings:

Step 1: Launch the MS Outlook application.

Step 2: Click the File menu followed by Info.

Step 3: Click the Account Settings tile and select the Account Settings option.

Step 4: Select the desired POP3 account and click the Change option.

Step 5: In the Change Account window, click More Settings.

Step 6: In the Internet E-mail Settings dialog, select the Advanced tab.

Step 7: Turn the slider towards right-side to increase the Server Timeouts range.

To Configure Server Port Numbers:

Step 1: Specify 995 to Incoming server (POP3) if you have marked This server requires an encrypted connection (SSL)

Step 2: Specify 110 to Incoming server (POP3) if you haven't activated the This server requires an encrypted connection (SSL) field

Altering these POP server configuration settings should fix the POP server timeout error 0x8004210a, but in major cases, PST email items got corrupted because of incomplete and improper Send/Receive mechanism. Extraction of emails from such situations requires technical expertise of higher level as it needs the perfect restoration of all email items. However, experts face problems in regenerating the PST email items so corrupted during the onset of POP Server Timeout Error 0x8004210a. Hence, the resolution for flawless PST recovery can be attained by employing a trustworthy Outlook PST repair software.

A Powerful & Comprehensive PST Recovery Solution

Kernel for Outlook PST Repair is an advanced solution devised to execute severely damaged cases of Outlook PST. It is empowered with agile QFSCI algorithms that orchestrate the accurate email recovery with minimal risks involved. The software is incorporated with dynamic migration options and individual email format options to save all recovered email items into desired email servers, web-based apps, Office 365 accounts, or latest email formats. Use this reliable software solution to repair PST files and fix 0x8004210a error in Outlook and check the authenticity of recovered results so produced.

How to Prevent Common Outlook Synchronization Errors?

To fix 0x8004210a error in Outlook, there are some tips you can try to prevent data sync errors in Outlook:

  • Disable any conflicting add-ins that might be interrupting with the workflow.
  • Remove the Outlook account and configure it again to reset settings.
  • Recreate the Outlook data file or OST to avoid corrupted data.
  • Manage the size of your mailbox by removing any outdated emails.
  • Adjust the limit of server timeout using the Account settings.

Closing remarks

To fix Outlook error 0x8004210a, make sure you are aware of the root causes of the issue. It will help you understand the issue better and identify the best possible solution. Use the above tried and tested methods to get rid of the error. Moreover, you can also try out the expert-recommended PST repair tool to fix damaged and corrupted PST file with complete Outlook data recovery.

Frequently Asked Questions

Q: How to increase the server timeout limit in Outlook?

A: To increase the server timeout limit in Outlook, here are a few steps to follow:

  1. Open Outlook and click File.
  2. Select Account Settings > Account Settings, then Change Account.
  3. Now click More Settings, then Advanced.

Here you can increase the server timeout limit.

Q: Can you share some tips on regular maintenance for Microsoft Outlook?

A: Tips for regular maintenance for Microsoft Outlook are:

  1. Regularly archive old data that is not needed frequently.
  2. Do not stack up folders with data items more than 100,000.
  3. Repair data files using utilities like ScanPST or advanced PST repair tool.
  4. Create a backup copy of PST file to avoid data loss.
Sristi rana
About Sristi RanaTechnical Writer

Sristi is the skilled writer and has shown strong analytical skills, effective writing styles, and a passion for creativity. Before writing her content, she runs a deep research related to the topic and creates the most-suited information in simpler words. In her idle time, she like watching cricket, travelling with friends, and reading fiction novels.Know more about Author

Table of Contents
Related topic
↑
Live Chat