My Outlook email stopped sending this morning

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@Rod101 wrote:

My Outlook email stopped sending this morning. I'm using Outlook 10 Version 14.0.7 on Windows 7. I've rebooted, but it still won't send. Below is the error message I get.

 

"Task '*****@comcast.net - Sending' reported error (0x800CCC78) : 'Cannot send the message. Verify the e-mail address in your account properties. The server responded: 550 5.1.0 Authentication required'"

 

Any suggestions would be appreiated.

Thanks,

Rod

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I moved your post to the email area of the forum.

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@Rod101 wrote:

My Outlook email stopped sending this morning. I'm using Outlook 10 Version 14.0.7 on Windows 7. I've rebooted, but it still won't send. Below is the error message I get.

 

"Task '*****@comcast.net - Sending' reported error (0x800CCC78) : 'Cannot send the message. Verify the e-mail address in your account properties. The server responded: 550 5.1.0 Authentication required'"

 

Any suggestions would be appreiated.

Thanks,

Rod

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Are you using POP3 in Outlook?  If so see here---------------------

https://forums.xfinity.com/t5/Internet/ANSWERED-How-To-Update-Your-Xfinity-Email-POP-Port-Settings/ta-p/3264418

Same thing here.  Started last night. I didn't change anything, but now my emails won't send.

An unknown error has occurred.

Server: 'smtp.comcast.net'
Windows Live Mail Error ID: 0x8007007A
Protocol: SMTP
Port: 465
Secure(SSL): Yes

(Note: I've tried Port 587, 465, 25.  All with and without SSL.  All to no avail)

Mine too, about a week ago. No settings I have tried will work.