This document explains how to fix Microsoft Outlook error 0x800CCC79 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:
The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ‘email@example.com’. Subject ‘Re: test’, Account: ‘mail.domain.com’, Server: ‘mail.domain.com’, Protocol: SMTP, Server Response: ‘550 5.7.1 Unable to relay for firstname.lastname@example.org’, Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79
This solutions applies for following version of Microsoft Outlook:
1. Hold Windows Key + R. Run Dialogue Box will open up.
2. Enter “Outlook /safe” and Click OK.
Step 2:Temporarily Disable any installed 3rd Party Antivirus:
Some times Antivirus/Malware/Adware programs mark Microsoft office installer files as Spam and block it from installing. Please refer your vendors website for disabling it temporarily. Once installation is done you can activate it again.
In most cases Outlook error code 0x800CCC79 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.
You can chat one-on-one with one of our Outlook Support Representative 24/7 by clicking on the Chat button.