How to resolve Outlook error 0x80040900

Microsoft Outlook application is an Office suit that is used within the organization to communicate with one another regarding the files, mails, events and other tasks. Sometimes when you try access some of the PST files in Outlook then it don’t get open and you will see that you are unable to connect with the server resulting in the prompting of Outlook error 0x80040900. Though it is not a critical error but it may harm the computer data and other applications badly. So it is very important to fix this issue manually or automatically. You should use Outlook PST Repair Tool to fix the issue automatically.

Compatible with Outlook 2000, 2002, 2003, 2007, 2010, 2013 and supports Windows 8, 7 (32-bit/64-bit), Vista (32-bit/64-bit ), 2003, XP, 2000, NT4 (SP6).

Symptoms –

Main symptom of Outlook error code 0x80040900 is the prompting of error usually as;

“Task ‘pop.isot.com – Receiving’ reported error (0x80040900) ‘The server name you entered cannot be found on the network (it might be down temporarily). Verify that you are online and that the server name is correct.”

What are the causes of Outlook error 0x80040900 –

Many causes are responsible for the prompting of this error like; disconnection with the email server, bad internet network, incorrect firewall settings, damaged PST files, corruption in the Outlook profile settings, virus problem, antivirus issue, etc.

How to resolve Outlook error 0x80040900

Use the following manual method to get rid of Outlook error code 0x80040900 –

  1. Check the internet connection.
  2. Change the firewall settings.
  3. Repair the PST files with inbox repair tool.
  4. Check the account settings correctly.
  5. Run an antivirus to fix the issue

With the help of the above manual method you can fix the problem of Outlook error 0x80040900 very efficiently. But one thing you should keep in your mind that it requires a deep technical knowledge of computer. So to fix the issue automatically you must use Outlook PST Repair Tool on your computer.

Compatible with Outlook 2000, 2002, 2003, 2007, 2010, 2013 and supports Windows 8, 7 (32-bit/64-bit), Vista (32-bit/64-bit ), 2003, XP, 2000, NT4 (SP6).

Outlook PST Repair Tool is one of the best tools that are specially designed to fix Outlook error problem. With the help of this tool you can enhance the performance of the application very much. The tool also creates a backup of the entire files before going to repair the problem.


Leave a Reply