Outlook Error – 0X800CCC0F

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https://answers.microsoft.com/en-us/outlook_com/forum/all/outlook-error-code-0x800ccc0f/101d1be9-5629-45ea-ad62-e20f0b554e70

https://support.microsoft.com/en-us/topic/error-occurs-when-you-send-or-receive-an-email-message-in-outlook-or-outlook-express-a46ddb77-640f-3e6a-8f35-6fe3ea93e923

Error 0x800CCC0F in Microsoft Outlook is a common issue that occurs when the connection to the mail server is interrupted. Here are some potential solutions to help you fix this issue:

  1. Check your internet connection: Ensure that your internet connection is working properly. Try accessing other websites or sending/receiving emails through another email client to confirm.
  2. Disable antivirus and firewall: Sometimes, antivirus software or firewalls might block the connection to the mail server. Temporarily disable them and try sending the email again. If it works, add an exception for Outlook in your antivirus/firewall settings.
  3. Increase server timeout: Outlook might be timing out before the email is sent. To increase the server timeout, go to File > Account Settings > Account Settings > select the email account > click Change > More Settings > Advanced tab, and increase the “Server Timeouts” slider.
  4. Repair Outlook PST files: Corrupted Outlook PST files could cause errors. To fix them, use the Inbox Repair Tool (scanpst.exe) that comes with Outlook. Locate the tool (usually in the Office installation folder), run it, and follow the on-screen instructions.
  5. Disable add-ins: Some add-ins might interfere with Outlook’s functionality. To disable them, go to File > Options > Add-Ins > Manage > COM Add-ins > click Go. Uncheck the boxes for any active add-ins and click OK. Restart Outlook and try sending the email again.
  6. Update Outlook: Make sure you’re using the latest version of Microsoft Outlook. Go to File > Office Account > Update Options > Update Now. Install any available updates and restart Outlook.
  7. Re-create email profile: Create a new email profile and set it as the default one. Go to Control Panel > Mail > Show Profiles > Add. Enter the required information for your email account and complete the setup. Set this new profile as the default one and try sending the email again.
  8. Contact your email provider: If none of the above solutions work, contact your email provider to check if there are any known issues or server-side problems.

Remember to restart Outlook after attempting each solution to see if the issue is resolved.