Proper Ways to Fix Outlook Error 0x80040900 Without Data Loss

What Causes Outlook Error 0x80040900?

The Outlook 0x80040900 error occurs when there is an issue with the account settings, and can not connect to the mail server. Some other reasons are also associated with it.

• Wrong incoming and outgoing server names and ports also cause errors.
• Outlook may fail to connect to the server if the internet connection is weak or unavailable.
• Security applications and firewalls might block Outlook from accessing the server.
• If your mail servers are misconfigured and temporarily unavailable. 
• Corrupted or outdated Outlook profiles also cause this error.

What Does it Signify?

0x80040900 is a Windows socket error related to communication failure between Outlook and the mail server.

“Task ‘<email account> – Receiving’’ reported error (0x80040900): The server name you entered cannot be found on the network.”

Manual Method to Fix Error 0x80040900

After compiling research on the causes of the Outlook error 0x80040900, we describe some of the tested and verified troubleshooting methods that are effective solutions to resolve the issue or error. Below is the recommended troubleshooting that fixes the issue manually.

1. Verify Server Connectivity

The error often occurs when Outlook cannot establish a connection with the mail server. To ensure proper connectivity:

• Ensure that your internet connection is both active and stable before attempting to connect Outlook to the server.
• Check if the mail server (Exchange or other) is online and operational.
• Look for any network-related issues, such as DNS resolution errors or firewall restrictions that may prevent server access.

2. Create a New Outlook Profile

If error 0x80040900 persists, it could be caused by a corrupted Outlook profile or damaged data files. Recreating the profile can often resolve this.

Steps to Create a New Outlook Profile:

1. Press the Windows key and type Control Panel in the search bar.
2. In Control Panel, select User Accounts, then open Mail (Microsoft Outlook).
3. After that, click the Show Profiles option to show the respective profile.
4. Select the existing profile and click Remove.
5. Click Add, provide a name for the new profile, and set up your email account.
6. Make this new profile the default and then restart Outlook to apply the changes.

3. Check Email Account Configuration

Incorrect account settings often trigger this error. Use the following steps to verify and update your configuration as needed:

1. Open Microsoft Outlook (desktop version) on your system.
2. Click on File in the top-left corner, then choose Account Settings > Account Settings.
3. Select the email account in question and click Change.
4. Verify the following:
   • Incoming mail server (IMAP/POP) and outgoing mail server (SMTP) are correctly entered.
   • Port numbers for incoming and outgoing servers are accurate (e.g., 993/995 for incoming, 587/465 for outgoing).
   • Ensure the encryption method (SSL/TLS or None) matches the server requirements.
5. Make any necessary corrections, click Next, and then Finish.

Best Tool to Fix Error 0x80040900

Sometimes, the Outlook 0x80040900 error is caused by corrupted Outlook data files. In this scenario, a manual method is not effective and prevents the application from establishing a successful connection. The PST Recovery Tool is a reliable and secure tool to rectify the corruption of Outlook data files. Having a highly intuitive interface and full compatibility with both Windows and Mac operating systems, this PST Recovery Tool offers an efficient solution for recovering your data. It can also fix Outlook error 0x8004010f or any other errors related to PST files. Equipped with a wide range of powerful features, it effectively repairs any issues encountered within your Outlook data files.

Steps to Fix Outlook Send Receive Error

1. Download and install the PST Recovery Tool on your system.
2. Next, navigate to the left sidebar and select the Open option.
3. From the Open setting, browse and select the PST file.
4. Apply the additional filters and choose a scanning mode from the prompt.
5. Preview all mailbox data and select the items you want to recover.
6. After that, click on the Save button on the top menu bar.
7. Then, choose a preferred file format to save the recovered data.
8. In the end, browse and choose the saving location and click OK.

Conclusion

In this tutorial, we discussed several methods to fix Outlook Error 0x80040900. This error occurs due to connection issues with the email server. To resolve it, we provided various solutions tailored to different scenarios. You can choose the most suitable method based on your specific condition. Each approach addresses distinct causes, ensuring effective troubleshooting. Follow the recommended steps carefully to restore proper email functionality and avoid further disruptions.

Frequently Asked Questions