The Outlook error 0x800ccc0f is one that occurs for some Outlook users when sending or receiving emails.
When the error occurs, it returns the following error message: Task server name – Sending and Receiving reported error (0x800ccc0f): The connection to the server was interrupted. If this problem continues, contact the server administrator or Internet service provider (ISP).The server responded:? K’
Consequently, Outlook error 0x800ccc0f ensures that SMTP emails aren’t sent or received. This is how you can resolve the Outlook error 0x800ccc0f in Windows 10.
Steps to get rid of Outlook error 0x800ccc0f
- Check Your Internet Connection
- Switch Off Anti-virus Software
- Switch Off the Windows Firewall
- Increase the Server Timeouts Setting in Outlook
- Run Outlook in Safe Mode
- Repair Outlook PST Files
1. Check Your Internet Connection
It might just be the case that your internet connection is down. So check that websites are opening in your browser. If not, the issue is obviously due to a connection error.
Rebooting your router might fix the connection.
2. Switch Off Anti-virus Software
Anti-virus software that scans emails can hamper Outlook‘s incoming and outgoing emails. As such, disabling third-party anti-virus utilities might fix Outlook error 0x800ccc0f.
You can disable many anti-virus utilities by right-clicking their system tray icons and selecting a disable, pause or exit option. However, you might need to disable some anti-virus utilities via their windows.
Alternatively, you could temporarily remove your anti-virus software from the Windows startup and then restart the OS as follows.
- Right-click the Windows 10 taskbar and select Task Manager.
- Select the Task Manager’s Start-up tab shown in the shot below.
- Now select your anti-virus utility, and press the Disable button.
- The anti-virus software will no longer start when you reboot Windows.
3. Switch Off the Windows Firewall
The Windows Firewall is another thing that can block MS Outlook. So switching the firewall off is another feasible resolution for Outlook error 0x800ccc0f. This is how you can configure the Windows Firewall settings in Windows 10.
- Click the Cortana button on the taskbar to open that app.
- Input the keyword ‘Windows Firewall’ in Cortana’s search box, and then select to open Windows Defender Firewall.
- Click Turn Windows Firewall on or off to open the options shown directly below.
- Select both the Turn off Windows Defender Firewall options there, and then press the OK button.
- Alternatively, you can check if Outlook is permitted through the Windows Firewall by clicking Allow an app or feature through Windows Defender Firewall.
- Press the Change settings button, and then scroll to Outlook in the Allowed apps list.
- Select both Outlook‘s check boxes if they are not ticked.
- Then press the OK button to confirm the new setting.
4. Increase the Server Timeouts Setting in Outlook
Outlook includes a Server Timeouts bar that can fix interrupted connections when you drag it to a longer setting. As such, that is another option worth noting for fixing the Outlook error 0x800ccc0f. This is how you can increase the Server Timeouts setting in Outlook 2010.
- First, open the Outlook software; and then select the File tab.
- Press the Account Settings button and click Account Settings to open the E-mail Accounts window.
Then press the Change > More Settings buttons to open the E-Mail Settings window.
- Click the Advanced tab, and then can drag the Sever Timeouts bar to the far right.
- Press the OK button to close the window.
Editor’s Note: This article continues on the next page. If you want to read more about Outlook, do check out our collection of guides.
Frequently Asked Questions
Error code 0x800ccc0f is a server-related Outlook error that occurs when Outlook fails to connect to the email server. The are multiple possible causes for this issue: incorrect SMTP settings, Internet connection issues, corrupted email files and more.
If Outlook fails to send or receive emails, this could be due to incorrect SMTP or account settings, server authentication issues, a firewall blocking your Outlook connection, email proxy server issues or the email server might be temporarily down.
Here are the most frequent causes that might explain why Outlook fails to connect to the email server:
- The email server is down due to an outage
- Your browser cache is corrupted hence Outlook cannot connect to the Exchange server
- Your antivirus or firewall is preventing Outlook from reaching the server