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Thunderbird

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Every time I open Thunderbird and before the email program opens a web site advertising supernova appears. Is there a way to stop this. I'm happy with the version I'm using and don't want to upgrade. Any suggestions will be appreciated. Thanks, Gary Cwitco

Every time I open Thunderbird and before the email program opens a web site advertising supernova appears. Is there a way to stop this. I'm happy with the version I'm using and don't want to upgrade. Any suggestions will be appreciated. Thanks, Gary Cwitco

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Hello, Not sure if this helps, but a similar topic was discussed here: https://support.mozilla.org/en-US/questions/1353760