IMAP error 0x800CCC0E can occur in Outlook for various reasons, including network connection problems, security application conflicts, Outlook profile compromised, PST file corruption, and so on. As a result, this error can be fixed manually by disabling antivirus software and the Windows firewall, checking the Outlook profile, and adjusting the port number. Use Microsoft’s built-in repair tool "Scanpst.exe" if your PST file is damaged. However, the Scanpst may fail. In that case, find and patch the corrupt PST files with the Stellar PST repair tool.