I have been using Thunderbird for a while my e-mail accounts are through Comcast.
Never a problem till I installed Avast.
Every time I try to check my e-mail— I get for one specific account… Sending of Password did not succeed. mail server mail.comcast.net responded: internal server error. And when i click OK, it tells me Log in failed and to retry/enter new password/cancel. I enter the password and I get the same error message.
The password hasn’t been changed, no updates or installations except for AVAST today. If i disable Avast completely I am able to check mail though Thunderbird without issues.
Have checked the forums and couldn’t see a solution. Any suggestions? or links will be appreciated.