Hi Doom - I’ve had exactly the same experience - connection failed for incoming Outlook mail ever since 16 July but can send mail with no problem. No problem if I go to the Outlook website but frustrated that can’t use eM Client and can’t find any helpful messages there. Like you I tried to use Legacy SSL/TLS option mentioned in another forum thread and it didn’t work either (Can't receive mails - #8 by jwhelbron). Also had same experience using diagnosis button which confirmed SMTP OK but IMAP not, and ‘fix’ didn’t help.
It all sounds very like the previous incident with Microsoft oAuth certificate being withheld from email clients and causing chaos, and so I can’t understand why there aren’t more messages appearing!
Here’s hoping …
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