Here is How to Fix Outlook Error 0x800ccc0f?

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  • Updated on June 12th, 2019

These Outlook errors frustrate us a lot, don’t they? Want to know how you can fix this Outlook error 0x800ccc0f, then just take a look at this blog. Well, here I will be mentioning the best ways to fix this issue. So, let’s first know the symptoms of this error and how can you fix it.


This problem comes ‘out of the blue’ and it can arise without any warning or prior symptoms. When you try to send and receive an email in Outlook, you may get the following error message:

Error  0x800ccc0f: Connection to the server was interrupted

To eradicate this error, you need to first know the reasons behind the occurrence of this error.

Reasons behind the occurrence of this error

Some of the reasons which give rise to this error are as follows:

  • Due to slow Internet connection or connectivity issues with the exchange server.
  • Corrupted Outlook profile or incorrect Outlook profile settings.
  • Technical issues with the server settings.
  • OST file corruption
  • Firewall blocking Outlook outgoing and incoming messages.

Some ways to fix the error code 0x800ccc0f in MS Outlook

There are some techniques applying which you can get rid of this error. Some of the best solutions are described here in this article. So, here we go.

#1 Disable firewall and antivirus

First of all, you should disable the antivirus and firewall. In addition to your firewall, your antivirus might hamper the smooth functioning of your incoming and outgoing emails. Follow the steps:

  1. First of all, open the Control Panel and go to network connections.
  2. Right click on the internet connection and select properties from the pop-up menu.
  3. Switch off the firewall under the security tab.

#2  Check for the Connectivity Issues

First of all, you need to check the connection issues, check your machine connected with the Exchange Server. For this check both the Internet connection and the access gateway connection to the exchange server.

#3 You need to check Outlook profile settings

Check out your default Outlook profile settings. If they are incorrect correct them. And if you are not sure about what’s wrong then delete the current default profile and create a new one. Then set the newly created Outlook profile as the default one.

#4 Clear up suspicious emails from Outlook and Outlook box

Sometimes it may happen that suspicious mail may be the real reason the occurrence of the error. if you think that there are such emails in your Outlook, delete them immediately.

#5 Verify your Router’s MTU

The maximum transition unit of your router might be creating some issue while sending and receiving emails.

#6 Repair Outlook PST File

The error can also occur due to a corrupted PST file. In this case, you can use the Outlook inbox repair tool to repair corrupt PST file. This is the inbuilt utility of MS Outlook which is provided to manually repair the corrupted or damaged PST file.

Fix this Issue by Using the Professional Solution

If all the above methods to fix the Outlook error 0x800ccc0f does not work properly then you can go for the automated tool like OST to PST Converter. This is the most reliable solution to fix this Outlook error. This tool is highly capable to extract all objects within the OST file without changing their original format. To use this software you need not be technical expertise and a novice can also use this as it has a user-friendly interface.

Also Read: Top Methods to Fix Outlook Error 0x80004001


This technical guide describes all the methods to fix Outlook Error 0x800ccc0f. I have provided the symptoms that lead to this error and also the ways to fix this issue. If you do not want to waste your valuable time and energy then you must go for the professional solution. Now, it’s your call to make your decision, hope this blog helps you to resolve your query.

About The Author:

Adom Smith is a DataRecoveryHelp Technology Writer. He is a technology enthusiast with over 3 years of experience in Data Recovery, IoT, Artificial Intelligence, and Robotics. He enjoys researching and sharing DIY solutions as well as tips and tricks for resolving Windows technical issues.

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