Outlook error (0x800CCC78)

Sending’ reported error (0x800CCC78) : ‘Cannot send the message. Verify the e-mail address in your account properties.

please try this.

Go to Tools > Accounts. Select the “Mail” tab. Select your account and press “Properties.” Go to the “Servers” tab, and check “My server requires authentication” under Outgoing Mail Server. Press “Settings,” select “Use same settings as my incoming mail server,” then press “OK” twice times to save the changes, then press “Close” to return to Outlook Express. Finally, restart your computer

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