New issue 2/10/24. TB (115.7.0) won't retrieve nor send emails thru Comcast. No settings or accts were changed. Went to an old restore point on Win 10, didn't help. Reset router, PC, uninstalled TB, reloaded TB, didn't help. Reviewed past articles (most are old) tried some of those solutions, but no joy. Can't find an Xfinity (comcast) phone # to call their tech support, although I doubt if they're any help. Will blame it on TB no doubt. Could really use some help here. Appreciate all you guys efforts!