Many users encounter the Outlook error code 0x800ccc78 when they try to connect to Microsoft Outlook or while using it. In some situations, the users come across the “unknown error” tag. In such cases, it might be impossible to diagnose the problem. In some other scenarios, users face the following error message while using Outlook:
Sending reported error (0x800ccc78): Unable to send the message. Please verify the email address…
As you can conclude from the above message, the Outlook error 0x800ccc78 is usually associated with the outgoing email messages. You might not face any issues with the incoming ones.
Reasons behind Outlook error 0x800ccc78:
Although there might be various reasons for the occurrence of the error 0x800ccc78, a couple of the common ones are explained below:
Let us now plunge right into the solutions to rectify this error.
Method 1-Enabling the SMTP option:
If the My outgoing server (SMTP) requires authentication option is disabled, the Outlook error code 0x800ccc78 might pop up. To enable this option, make use of the following steps:
Method 2-Setting the Port Number to 587:
When you find that your ISP has changed the port number for outgoing emails, you need to modify it on your Account Settings. Follow these instructions to do the same:
You have now successfully fixed the Outlook error code 0x800ccc78.
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