Sending, receiving, and organizing email in Outlook.com
Think I discovered something.
When I log out, and then log in again, the problem disappears.
I'm not sure, but I suspect that the problem has something to do with the "don't log me out" option.
Normally if I left the Outlook window for too long, it would require to login again anyway.
And that's where things has changed lately. Since a couple of weeks Outlook hasn't prompt me to login after long inactivity.
Instead it starts doing this constant refreshing thing. It's like it's trying to log out, forgeting the "don't log me out" was enabled, so it keeps refreshing on and on.
But that's just my theory.