What Is 0x80004005 Outlook Error?
0x80004005 Outlook is an error that users commonly encounter while attempting to send or receive emails on Outlook.
The message that appears usually states “This message could not be sent. Try sending the message again or contact your network administrator."
The client operation failed. Error is [OX80004005- 0X0004B9-OXOO501].
Error Causes
This error is usually caused by a problem in the Local Area Network or LAN. What actually happens is that signals with the wireless LAN are lost or a connection problem occurs within the network cable.
As a result, the 0x80004005 Outlook error is triggered while sending or receiving an email. Sometimes the problem goes away on its own. However, if it recurs after a few hours, it shows that some problem exists within the network.
Also, it is important to understand that different factors can affect the quality of wireless connections in a network.
For instance, garage door openers, microwave ovens, and Bluetooth devices can easily become obstacles, disrupting the connection and causing the quality to degrade. Other causes are listed below as follows.
- Missing, corrupt, or damaged registry keys
- Existence of viruses
- Outdated drivers
It is a must to fix this error otherwise potential risks associate with this error such as permanent damage and blue screens.
Further Information and Manual Repair
There are two ways to fix this error and both are listed below as follows.
- One solution is to disable script blocking in Norton Antivirus. Most users encountering this problem have Norton Antivirus installed on their PCs. To correct this problem, simply turn off the ‘Enable Script Blocking’ feature. However, there is a downside associated with this solution. Enabling script blocking will make your network or computer vulnerable to viruses and malware. That’s why it is not advised to implement this solution.
- The alternative solution is to simply disable the new-mail notification feature offered in Outlook. To disable notifications of any new emails, the steps go as follows. Open Outlook and go to the Tools menu. Here you will come across ‘Options’.Click on it and then select the ‘Preferences’ tab. Here you will find the ‘Email Options’. Click on it and then uncheck the checkbox against the option, ‘Display a notification message when new mail arrives’. Click Ok two times.
Both these workarounds will work. Therefore, it is advised that you employ any one of them as per your needs.


When you are in settings, on the left side move toward the bottom until you run into a tab that says On Startup and click on it. On right, a new section will open, click on Open a specific page or set of pages.
You will be presented with the option to add a new page by typing its URL or getting it from bookmarks or using a specific opened one. You can repeat this process until you have added all pages that you wish to be automatically opened once Chrome is opened for the first time.

Once you are in the control panel, switch your view to large icons and locate Indexing options.
Inside indexing options, click on advanced.
In advanced options click on the rebuild and confirm.
Leave your computer to finish and your searches should be working fine now. 