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Thunderbird doesn't use two-factor authentication passwords, try to replace them with a numeric application password.

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Hello there

Your passwords are protected by third parties: if your password is used by someone else, you will automatically receive a notification on a blue screen or strip.

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Hello again, I can see now that I was not clear with my question. I have been using Comcast as my mail client for years. TB receives & sends my mail via Comcast which has worked fine for years. However, occasionally overnight I get the message "Login to server imap.comcast.net with username *something*@comcast.net failed" and asks for me to supply a new password. After doing so, I get a message "Login to server imap.comcast with username xxxxxxxxx@comcast.net failed". I have been unable to get my mail from TB for days now. I can go to the Comcast site and retrieve my mail using their system What changed overnight??? Comcast keeps telling me the problem resides with TB. Thanks, John

Hello there

This topic is related to comcast or that from Thunderbird is completely unclear to me, there are settings and ways that are offered on Comcast's chat area or where you can be helped more in following directions in their time, for example, the question of how to change these passwords, updating them via the first account and the second for example. This is also possible under certain conditions how they can explain this to you.

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Hello there

Using your comcast account itself should be very possible. Both programs could also be erased and restarted after reinstallation.

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Hello there

And for the third, we recommend that you carefully check all your connection configurations regarding comcast and perhaps also that of Thunderbird

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Hello there

A good answer would be, it is the never solved subject and a separation of both software installations would be more convenient to uninstall and reinstall them.

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