Configuring preferences and options in Outlook.com
If non-junk emails always go to junk mail you need to move them to "Inbox", either individually or by batch. Maybe easier to move them all to Inbox and then send the ones you want to Junk. If this happens only after the "can't connect" message then it is funny (and crazy!) Myself, I'm glad I switched to a Chromebook. I never have that problem.