
None of my gmail acccounts are working in Thunderbird
Had to replace my hard drive and reinstall TB. I restored the profile file, it worked for a hour than it stopped getting or even showing any gmail emails I downloaded. It will not let add a new gmail account. I removed one and tried to add it again but fail.
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Here is the error message: SEC_ERROR_BAD_SIGNATURE">SEC_ERROR_BAD_SIGNATURE</a>
New hard disk, new install of anti virus.
Did you perhaps get one that uses self signed certificates to hack your email? Avast I think is the usual culprit for that. But AVG does something weird as well.
Have a look here https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues