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Thunderbird unable to connect to Comcast

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I am receiving an error message that states there is an authenticatioen error when I try to access my email. This has only been happening for the past two days. The log in to the comcast website, using the same email and password as I use with Thunderbird, works perfectly. How can I fix this.

I am receiving an error message that states there is an authenticatioen error when I try to access my email. This has only been happening for the past two days. The log in to the comcast website, using the same email and password as I use with Thunderbird, works perfectly. How can I fix this.

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