Rod101's profile

New Poster

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3 Messages

Thu, Sep 26, 2019 12:00 PM

My Outlook email stopped sending this morning

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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Responses

Rustyben

Expert

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24K Messages

2 y ago


@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


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

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!tick
Latoque

Expert

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28.8K Messages

2 y ago


@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


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

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!tick

Frequent Visitor

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9 Messages

2 y ago

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)

Frequent Visitor

 • 

9 Messages

2 y ago

Actually found out why mine wasn't.  It was the photos that I was sending.  If you click just on "attachment", it adds them as an album and won't send.  Apparently, you have to click "Insert", then attach.

Meanwhile, anything sent AFTER those wasn't sending either.  All good now.

New Poster

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1 Message

2 y ago

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

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