MS Outlook

How to Resolve “0x800ccc0f” MS Outlook Error?

How to Resolve “0x800ccc0f” MS Outlook Error

Although MS Outlook is appreciated for its remarkable user experience and engaging interface, some errors affect the user experience and features and functionalities of MS Outlook poorly. One such annoying errors are – “0x800ccc0f”. In this error, a user gets an error message like this:

“Your server has unexpectedly terminated the connection. Possible causes of this include server problem, network problems, or a long period of inactivity. Account, account name, Server: ‘server name’, Protocol: POP3, Server Response: ‘+OK’, Port: 110, Secure (SSL): No, Error Number: 0x800ccc0f.”

Facing the same error in your Outlook account? Fix the issue by following the solutions provided below.

Steps to Fix 0x800ccc0f Error in MS Outlook:

1.) Make Sure You Are Connected to the Internet:

  • Launch your web browser.
  • Type in the address bar of your browser and press ENTER key.
  • If you are connected to the internet correctly, the Microsoft website will get opened in your browser.
  • If the website doesn’t get opened, you’ll need to fix your internet connectivity issue.

2.) Check your Outlook Email Account Settings:

Any misconfiguration email account settings of Outlook can also result in such error. If you find any issue with your Outlook email account settings, set up a new Internet email account in Outlook by following these steps.

NOTE: Following steps are for Outlook 2013 and 2016

  • Launch Outlook, go to File > Info > Account Settings > Account Settings in the drop-down.
  • Now, go to the Email tab and select the New option.
  • Next, go to the Add New Account dialog box to automatically configure a new email account.
  • You will need to configure the following settings in the Email Account section located under Auto Account Setup.
    • Enter your complete name in Your Name text field.
    • Enter your email address in the Email Address text field.

NOTE: Your ISP provides this information.

  • Enter the password provided by your ISP in the Password text fields.
  • Wait until Outlook tries to configure your account automatically.
  • Once configured, click Finish and then Close to complete the process.

3.) Remove Suspicious Email Messages from your Mailbox:

Sometimes suspicious emails can block your receiving error message in Outlook. If you find any suspicious emails in your account, make sure to delete them by any of the following methods:

  • Contact your Internet Service Provider (ISP) and ask them to remove the emails.
  • Alternatively, you can access your mailbox by using your ISP’s web-based email program, and then you can remove the emails.

4.) Look for Additional Suggestions from your Antivirus Manufacturer’s Website:

If you are using an antivirus program that includes an inbuilt email-scanning feature, you may need to do additional configuration tasks to use Outlook with an antivirus program. You can ask your Antivirus manufacturer for assistance regarding the configuration of Outlook with an antivirus program.

5.) Change Your Firewall Settings to Allow Outlook to Access the Internet:

NOTE: Making any changes to your Firewall settings may make your computer vulnerable to malware, spyware, virus, etc. Though this solution is not recommended, you can check if the Firewall is causing issues with your Outlook program. Here, you will need to configure your Firewall settings to let the following files have access to the Internet.

  • Outlook.exe (for Outlook)
  • Msimn.exe (for Outlook Express)

To know about the ports, contact your ISP or system administrator.

Alternatively, you can remove your current Antivirus software and install McAfee Personal Firewall as this program will ensure that Outlook gets access to the internet.

6.) Repairing Outlook:

NOTE: The following steps are for Windows 10.

  • Right-click on the Start option located at the bottom-left corner of your desktop and select Apps and Features from the menu that appears on the screen.
  • Now, choose the relevant Microsoft Office product you wish to repair and select the Modify button.

NOTE: Performing this task will repair the whole Microsoft Office suite. In case you have an individual app installed on your desktop, you will need to search the application by name.

  • Depending on whether the copy of Office is MSI-based or Click-to-run based install, you will need to perform the following.
    • MSI-Based: Under Change your installation option, select Repair, and then click on the Continue option.
    • Click-to-run: Under “How would you like to repair your Office Programs” option, click on the Online Repair option to ensure everything gets fixed. Then select Repair.
  • After that, follow the on-screen instructions to complete the repairing process.

7.) Make Sure that Your Email Profile Functions Correctly (Only for Outlook):

To know whether your email profile is functioning correctly, you will need to create a new email profile. If you can send and receive emails by using the newly created email profile, you can configure this Outlook profile as your default profile.

Find the Default Outlook Data File

  • Go to Control Panel > Mail > Mail SetupOutlook dialog box. Click on the Show Profiles option.
  • Next, select your current profile and click on the Properties option.
  • Now in the Mail Setup – Outlook dialog box, click on the Data Files.
  • Then, go to the Data Files tab under the Account Settings. Note down the name and location of the default data file of your Outlook profile. Click on the Close button.

Create a New Outlook Profile

  • Go to the Control Panel and click on the Mail option.
  • Under the Mail Setup – Outlook dialog box, click on the Show Profiles.
  • Now go to the General tab and then in the Mail dialog box, click on the Add button.
  • Enter a new profile name in the New Profile dialog box and click on the OK button.
  • Next, enter your email account information in the Add New Account dialog box and click on the Next button.
  • Once your account gets configured successfully, click on the Finish button.

8.) Open Outlook in Safe Mode

Note: The following steps are for Windows 10.

  • Select the Search box of your Task Bar.
  • Enter outlook.exe /safe in the Search box.
  • Hit Enter.

NOTE: If you see an error indicating your email profile is damaged or conflicting with third-party applications or add-ons, you will need to create a new email profile (see step 3).

9.) Perform an Inbox Repair Tool to Repair your .pst file

a.) A.pst file is responsible for storing your contacts, notes, emails, calendar, and other data. If the .pst file is corrupt, you may not be able to send or receive emails in your Outlook program. In such a case, you will need to repair the .pst file in your Outlook program by following the below-mentioned steps.

For Outlook 2016 Click-to-Run installation on a 64-bit version of Windows <disk drive>\Program Files(x86)\Microsoft Office\root\Office16
For Outlook 2016 Click-to-Run installation on a 32-bit version of Windows <disk drive>\Program Files\Microsoft Office\root\Office16
For Outlook 2016 MSI-based installation on a 64-bit version of Windows <disk drive>\Program Files(x86)\Microsoft Office\Office16
For Outlook 2016 MSI-based installation on a 32-bit version of Windows <disk drive>\Program Files\Microsoft Office\Office16
For Outlook 2013 Click-to-Run installation on a 32-bit version of Windows <disk drive>\Program Files\Microsoft Office 15\root\office15
For Outlook 2013 Click-to-Run installation on a 64-bit version of Windows <disk drive>\Program Files(x86)\Microsoft Office 15\root\office15
For Outlook 2013 MSI-based installation on a 32-bit version of Windows <disk drive>\Program Files\Microsoft Office\Office15
For Outlook 2013 MSI-based installation on a 64-bit version of Windows <disk drive>\Program Files(x86)\Microsoft Office\Office15

NOTE: The table only includes a location for Outlook 2013 and the 2016 version.

Start by locating the relevant folders on your desktop (Refer to the above table) and then double click on the Scanpst.exe file.

NOTE: The files and folders can be hidden. You may need to unhide them.

b.) Repair the .pst file

  • After click on the Sanpst.exe file, go to the Inbox Repair tool and type the filename and path for your personal folders (.pst) file. Alternatively, you can click on the Browse button to locate the file.
  • After locating the file, click on the Start button.


  • The Inbox Repair Tool may need to be run multiple times to completely repair your .pst file.
  • Also, the Inbox Repair Tool cannot fix every issue which gets detected. In some cases, some items might not get recovered, especially if they are entirely deleted or corrupted beyond repair.

c.) Recover Repaired items to a new .pst file

  • Once you have performed the Inbox Repair Tool, you can start Outlook and recover the repaired items.
  • To begin, create a new .pst file entry in your profile.
  • Then move the recovered items to your new .pst file.
  • After that Launch Outlook. If you are using multiple profiles in your Outlook program, make sure you select the profile which contains the .pst file which you tried to fix.
  • Press CTRL+6 to open the Folder List view.
  • In the Folder List, you will find the following folders:

d.) Recovered Personal Folders

  • Calendar
  • Contacts
  • Deleted Items
  • Inbox
  • Journal
  • Notes
  • Outbox
  • Sent Items
  • Tasks

NOTE: Usually you will find the above-stated folders to be empty as this is a rebuilt .pst file. You would also see a folder titled “Lost and Found”. In this folder only that you will find the items and folder recovered by Inbox Repair Tool. If you don’t find certain items missing in the “Lost and Found” folder, it means they are beyond repair.

Now, you will need to create a new .pst file in your Outlook profile by following these steps:

NOTE: the following steps are for Outlook 2010 and above.

  • Go to the File tab and click the Info tab.
  • Next, click on the Account Settings button, and click on the Account Settings again.
  • Then, click on the Data Files tab.
  • Select Add to open the Create or Open Outlook Data File dialog box.
  • Give a suitable title to your new Outlook Data (.pst) file, and click on the OK button.
  • Your new Outlook Data (.pst) file will get created in your profile.

e.) Drag and drop the recovered items from the “Lost and Found” folder to your newly created .pst file.

f.) Once you are done moving all the items, you can delete the Recovered Personal Folders (.pst) file from your profile including the “Lost and Found” folder.

10.) Clear Emails That Are Pending in Your Outbox Folder (For Outlook Only):

In your Outlook program, click on the Outbox option and check if there is any pending email stuck in the Outbox folder. Follow the below-mentioned steps to remove those emails stuck in the folder.

I.) In your Outlook program, click on the Send/Receive tab and then select Work Offline. This is done to prevent Outlook from sending all the stuck emails in the Outbox folder.

II.) Select the Outbox folder and perform one of the following actions:

  • Move Emails: Move the emails to the Drafts folder. You can do this either by dragging and dropping the emails to the Drafts folders, or you can right-click the email, select Move > Other Folder > Drafts.

NOTE: This allows you to open the large email, and remove, resize, and then re-add the attachments before you again try to send an email.

  • Delete Emails: Right-click on the relevant email and select Delete from the menu.

NOTE: If you see the message “Outlook is transmitting the message”, close Outlook, and wait until it exists. You may need to use Task Manager to ensure that the Outlook.exe process is complete. Now restart Outlook again, and repeat from Step 2.

III.) Now, click on the Send/Receive tab and deselect Work Offline.

Now you know how to fix the error “0x800ccc0f” in your Outlook program. If you need further assistance regarding the above or any other issue in your Outlook program, feel free to get in touch with the Outlook customer support team.

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