Since V60 emails have taken longer to download, server timed out etc. After latest update 99% of download requests time out or fail to authenticate. Why?
Running W10 with latest updates and Thunderbird 60.5.0 (32-bit). Since updating to V60 earlier in the month, I started to get time out warnings on my several email addresses (BT & 123-reg). But usually after a couple of attempts, emails would download. With each successive update since, the problem has increase until now, after yesterday's update, almost 100% failure and I'm have to resort to Webmail to see what's there. Occasionally, if I do get a connection, it then says sending of password failed, Authenticion Failure.
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To test if a security program is the cause of the timeouts and failures to authenticate, run Windows in safe mode and see if TB performance changes.
I tried in safe mode. Some Email accounts downloaded intermitently. Some didn't download at all with Time Out, Password/Username/Authentication errors. Tried new passwords to no effect.