Configuring preferences and options in Outlook.com
I have had the same problem. I too have been receiving escalating numbers of junk email but all would be directed into my Junk Email folder. This has worked very well until several days ago when I started to receive 3 to 4 junk messages in my inbox each hour, sometimes more. Blocking contacts is ineffective as the number of senders is infinite - it is unhelpful to use this feature for this problem. What is strange is this system is normally very effective but suddenly, it has started to fail. I recall this happening in a similar pattern several years ago.