Filed Under: Repair, Windows

0x800408fc Error in Outlook – Best Fixes for It


Written by Jack Lin

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Error code 0x800408fc is not a rare issue for Microsoft Outlook users, regardless of the version they use. Interestingly, this issue can emerge out of nowhere even if you don’t make any changes to the application.

It is true that 0x800408fc might appear to be a pretty serious error at a glance. However, this issue can be solved easily with the methods we have mentioned below.

Interestingly, this issue can emerge out of nowhere even when you don’t make any changes to the Outlook application. Also, it appears on all the Outlook versions, including the latest.

The reason behind this error could be incorrect mail servers saved in your Outlook settings. With that said, let’s find out how to fix this issue without bothering much.

In fact, we explain several methods in this article so you can choose the most appropriate method. However, regardless of the method you use, be sure to check if the mail server settings are specified.

PS: regarding the 0x80040610 Error on Outlook, here are the top solutions for you.

What is a PST File?

When it comes to computing, PST is the term that describes Personal Storage Table. Basically, it is a unique file format that is developed by Microsoft to store important data. For instance, it stores data such as calendar events, messages, notes, and so on.

In some cases, this file format is even known as a “Personal Folder.” This file can even function as the cache for MS Outlook to make its job easier. In that case, it might work as an Offline Storage Table or even as an Offline Folder.

Critical data, such as Outlook messages, contacts, calendars, etc., are stored in this folder. This folder can be found on a local computer, so the Outlook application communicates with it when sending emails.

Over time, PST files can start to corrupt or malfunction for many reasons. One of the main reasons behind a corrupted PST file is too much data. PST files can often get overloaded if you use them for a pretty long time.

As a result, Outlook might not be able to retrieve data from it correctly. That can eventually lead to a 0x800408fc error and prevent you from sending emails through Outlook. So, repairing PST is the ultimate solution to address the 0x800408fc error if none of the other methods work.

In the first couple of solutions, we explain the most basic fixes to the 0x800408fc error. However, if none of those methods work, you should proceed to repair the PST file. But we don’t advise our readers to take a risk by repairing it manually.

This is particularly true if you don’t have prior experience dealing with PST files. In this case, we strongly recommend using a professional Outlook repair tool. We explain it as the ultimate solution to repair MS Outlook applications.

So, use the methods mentioned below to overcome the 0x800408fc error and start using Outlook smoothly.

Solution 1: Disable Your PC’s TCP/IPv6 Protocol to Fix the 0x800408fc Error

If you notice a 0x800408fc error with your Outlook application, here’s the first method to try. As per this method, you should disable TCPIP/IPv6 protocol.

In fact, this is the Internet Protocol Version 6 that should be disabled on the active network. The process is not hard at all.

However, we list the steps below for those who don’t know how to do it.

  • First, you should launch the “Run” command on your PC. You can do it by pressing both the “Windows” and “R” keys simultaneously.
  • Once the run box is open, you should enter the text “ncpa.cpl” in the given space. After that, you should press the “Enter” key to proceed.
Disable IPV6 to fix 0x800408fc Error in Outlook
  • After that, just double-tap on the network adapter, which is currently active.
  • Click on the option called “Properties” as well.
Connction Properties
  • Now, you will see an option to uncheck “TCP/IPv6“. Just uncheck it and click on the option called “OK.”
Uncheck "TCP/IPv6"

That’s basically it. Now, you can relaunch MS Outlook and see if the 0x800408fc error persists or not.

Solution 2: Reconfigure the Mail Server Ports

The following method you should try when the 0x800408fc error has appeared is reconfiguring the Mail Server Ports.

With that, you are supposed to change incoming/outgoing mail server ports in your Outlook application.

If you want to do it, follow the easy steps mentioned below.

  • First, you should launch MS Outlook.
  • After that, you should click on the option called “File” and then go to “Account Settings.” You will be able to find an email tag after that.
Reconfigure mail server ports to fix 0x800408fc Error in Outlook
  • Double-tap on the email account, so you will be directed to change the settings.
  • Click on the option called “More Settings.”
  • Then, in your “Outgoing Server,” choose the box dedicated to “Outgoing Server Required Authentication.”
Outgoing Server Required Authentication
  • As the next step, you should click on the tab labeled “Advanced” to proceed. Then, you should apply the changes mentioned below.
  • First, check the box labeled “This Server Requires an Encrypted Connection SSL.”
  • Are you using an IMAP account? If so, you should configure the Incoming Server Ports either to values 995 or 993.
  • Once you’ve done that, you should change the “Use the following type of encrypted connection” option to “SSL.”
  • You can tap on the option “OK” so the changes you made will be saved.

That’s it. Just restart Outlook now and see if it works.

Solution 3: See if your PC’s Mail Server is Working Properly

The next option is to check if your PC’s Mail Server is working as expected. You can do it by using a default feature on your PC. It is the PING command, and it can check the reachable mail servers through your network.

Assume that your mail server’s name is “” So, launch the command prompt and enter the mail server’s name ( in the command prompt. Then, you should hit the Enter key to proceed.

Check if you don’t get a reply from the respective mail server. If you can visit other websites through a web browser, the issue is something different. If that’s the case, you will have to look at the firewall settings.

You will also have to check with the email service provider as well and check the mail server name. You will be able to check if the mail server is incorrect by checking with them.

Check mail server working properly to fix 0x800408fc Error in Outlook

Solution 4: Use an Outlook Repair Tool to Fix 0x800408fc Error

The next option is to repair the 0x800408fc error through a professional Outlook repair tool. It is true that the manual methods we mentioned above can deliver some success.

However, those methods may not be the best to address some complex issues associated with Outlook.

In that case, you can easily get the assistance of a professional tool that can repair Outlook errors. Such a tool can scan the application and find the respective error. Also, it can fix the error without needing you to do the manual work.

Stellar Outlook Repair is the best tool we can use to repair Outlook applications, including Outlook 0x80040119 error. In fact, we choose this app due to several reasons, and user-friendliness is one of them.

So, to repair your Outlook application and use it again, you should download Stellar Outlook Repair first. Then, you should proceed with the steps mentioned below.

01. Locate the PST File

Now that you have downloaded and installed Stellar Outlook Repair, launch it to see the home screen. Now, you should navigate to the PST file that should be repaired. You should then click on the option called “Repair” to proceed.

Stellar Outlook Repair

02. Repair

Now, you’ll see that the Stellar Outlook Repair tool performs a scan. After this scan, a list of corrupted or deleted PST files is displayed on the screen.

Stellar Outlook Repair

03. Save the File After Previewing

Now, you can preview all the corrupted and deleted PST files. These PST files are bundles of data that comprise contacts, notes, emails, deleted emails, etc. You should click on the option called “Save.”

After that, you should select the file format you prefer. In addition to repairing the corrupted PST files, it can recover the deleted files using this powerful application. To do that, you should just check the box labeled “Include Deleted Items“.

Fix 0x800408fc Error in Outlook with 
 Stellar Outlook Repair

That’s it. You should check if the process is completed and were able to repair the PST file. For pretty much all the users, this method should work. Once the repair is done, you can import the respective file into Outlook and work as usual.


1. What is the 0x800408fc error in Outlook?

The 0x800408fc error in Outlook is a connection error that occurs when Outlook is unable to connect to the email server. This can be due to incorrect email settings, firewall restrictions, or ISP limitations.

2. How can I fix the 0x800408fc error?

First, check your email settings to ensure they match those provided by your email provider. If the error persists, temporarily disable your firewall. If all else fails, contact your ISP for further assistance.

3. Can the 0x800408fc error prevent me from sending and receiving emails?

Yes, the 0x800408fc error can disrupt your email workflow by preventing you from sending or receiving emails through Outlook.

4. How can I prevent the 0x800408fc error from occurring in the future?

To prevent the 0x800408fc error, ensure that your email settings are correct and that your firewall allows Outlook to connect to the server. Regularly updating Outlook can also help avoid this and other errors.

5. When should I seek professional help for the 0x800408fc error?

If you’ve tried the troubleshooting steps mentioned and are still experiencing the error, it might be time to seek professional help. A tech support professional can help diagnose and fix the issue.


The 0x800408fc error on Outlook is related to the mail server connectivity. It can eventually stop you from sending emails as it prevents connecting incoming and outgoing mails. However, the issue is not as critical as it sounds.

All you need is to try the methods explained in this article. If the manual methods don’t do any good, you can rely on Stellar Outlook Repair as the ultimate solution.


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