This week, Microsoft updated my Win 10 and Thunderbird updated to version 91.7.0(64bit). Since then, when trying to download emails, I get mainly time-outs or authentication/invalid user name or password error warnings. Both Microsoft and Email providers say it isn't them, must be Thunderbird. Prior to this Thunderbird worked ok -odd time out but no other errors. Any suggestions - in basic English please, I'm not that tech savvy.