5 Ways to Fix Outlook IMAP Error 0x800CCC0E on Windows 11

Quick Tips

• Open Outlook in safe mode to check if an add-in is triggering the 0x800CCC0E error.
• Review Outlook’s server settings and try changing the server port number to see if that helps.
• Consider creating a new Outlook profile or running the Office repair tool if the error persists.

Try Basic Fixes

• Clear emails from the Outbox folder: Outlook may throw the 0x800CCC0E error if some of your messages are stuck in the outbox. In that case, you must delete any emails from the outbox and try sending them again.
• Disable email scanning in your antivirus program: If you’re using a third-party antivirus program with an email-scanning feature, it may interfere with Outlook operations and cause problems. You can temporarily disable the email scanning feature in your antivirus program to see if that improves the situation.

Fix 1: Start Outlook in Safe Mode

Faulty third-party add-ins on Outlook can also give rise to such errors. To rule out this possibility, you can open Outlook in Safe Mode. For that, hold down the Ctrl key and double-click the Outlook shortcut. Click on Yes when the prompt appears.

Try using the Outlook app to see if you encounter the 0x800CCC0E error. If Outlook works fine in Safe Mode, you can disable all the add-ins by following the steps below.

Step 1: In the Outlook app, click on the File menu at the top.

Step 2: Use the left pane to navigate to Options.

Step 3: In the Outlook Options window, switch to the Add-ins tab. Use the drop-down menu next to Manage and select COM Add-ins. Then, click the Go button next to it.

Step 4: Uncheck the boxes to disable add-ins and click OK.

Restart the Outlook app and enable your add-ins individually to isolate the one causing the issue.

Fix 2: Check Server Requirement From Settings

If Outlook fails to authenticate your email’s outgoing server (SMTP), it may prevent you from sending new messages by displaying the 0x800CCC0E error. Here’s what you can do to fix it.

Step 1: Press the Windows key + R to open the Run dialog. Type control in the Open field and press Enter.

Step 2: Switch the view type to Large icons and go to Mail (Microsoft Outlook).

Step 3: Click on Email Accounts.

Step 4: Select your email address and click Change.

Step 5: Click on More settings.

Step 6: Navigate to the Outgoing Server tab and tick the box that reads My outgoing server (SMTP) requires authentication. Then, click OK.

Fix 3: Change Server Port Number

Such errors may also appear in Outlook if the outgoing server port number is incorrect or blocked. Follow the steps below to fix it.

Step 1: In the Outlook app, click on the File menu in the top left corner.

Step 2: In the Info tab, expand Account Settings and select Server Settings.

Step 3: Under Outgoing mail, change the port value to 587.

Step 4: Use the slider to increase the Server timeouts and click Next to save changes.

Fix 4: Create a New Outlook Profile

Your Outlook profile contains your Outlook settings. If there’s an issue with that profile or if it has become corrupted, Outlook may have trouble connecting to the server or exchanging emails. You can create a new Outlook profile to fix the issue.

Step 1: Click the search icon on the taskbar, type control panel, and press Enter.

Step 2: Change the view type to Large icons and click on Mail (Microsoft Outlook).

Step 3: Click the Show Profiles button.

Step 4: Click the Add button, enter the name for the new profile, and click OK.

Step 5: In the Add Account window, enter your account details and hit Next.

Step 6: Once the profile is created, select your new profile under When starting Microsoft Outlook and hit Apply.

Fix 5: Run Office Repair Tool

Microsoft provides a handy Office repair tool that you can use to repair any of its apps, including Outlook. So, if none of the above solutions work, you can repair the Outlook app by following the steps below.

Step 1: Right-click on the Start icon and select Installed apps from the list.

Step 2: Scroll down to locate the Microsoft Office suite on the list. Click the three-dot menu icon next to it and select Modify.

Step 3: Select Online Repair and click Repair.