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Email send problem with Comcast account

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DonK
DonK
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I can no longer send emails using my Comcast account. This problem just started. I periodically get this error message:

thunderbird authentication failure while connecting to server imap.comcast.net

I am using a Windows 10 desktop PC. - I have no problem sending emails using my gmail account on this PC. - I have no problem sending emails using the Comcast account on a second Windows 10 desktop PC and using my Android app. - I can receive email from the Comcast account on the problem PC. - The server settings on the problem PC are the same as on the PC that is able to send messages on the Comcast account. - I tried reinstalling Thunderbird on the problem PC. - I changed Authentication Method from "OAuth2" to "Normal Password".

Any suggestions?

I can no longer send emails using my Comcast account. This problem just started. I periodically get this error message: ''thunderbird authentication failure while connecting to server imap.comcast.net'' I am using a Windows 10 desktop PC. - I have no problem sending emails using my gmail account on this PC. - I have no problem sending emails using the Comcast account on a second Windows 10 desktop PC and using my Android app. - I can receive email from the Comcast account on the problem PC. - The server settings on the problem PC are the same as on the PC that is able to send messages on the Comcast account. - I tried reinstalling Thunderbird on the problem PC. - I changed Authentication Method from "OAuth2" to "Normal Password". Any suggestions?

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