content servers are separate from outlook servers.FWIW, hold on to your hat for a few days. The Win 10 Anniversary Update started getting pushed out to Fast/Slow Ring subs a few days ago and it went public today - my guess is that their servers are slammed. My two Outlook.com accounts keep choking/timing out while my O365 Business accounts are working fine...
What worked for me on my Live account was to choose "other" rather than "Outlook" when adding the account.