This document explains how to fix Microsoft Outlook error code 0x800CCC6F if it is not working properly or throwing an error while installing, updating, launching/opening, performing action like sending or receiving emails, configuring emails etc.
The error message may look like:
An unknown error has occurred. Subject ‘<subject>’, Account ‘<sender>’, server ‘<server name>’, Protocol: SMTP, Server Response: ‘554 Originator address does not match authentication credentials’, Port: 25, Secure(SSL); No, Server Error:554, Error Number:0x800CCC6F
This solutions applies for following version of Microsoft Outlook:
1. Hold Win Key + R. Run Dialogue Box will open up.
2. Type “Outlook /safe” and Click OK.
In most cases Outlook error code 0x800CCC6F should be resolved by following above steps. If however the issue still persists it means there is some critical issue with your system which needs to be fixed manually and is recommended to be done by an experienced Computer Technician.
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