There is no solution which really works.
Moreover, be careful!
There are a lot of fake websites which ask you for your hotmail address and your password if you want to know who has blocked you. Don't trust these websites... No one has to ask you for a password, on these websites or else where.
If one day you find a website which only ask the address of your contact, you have also to know that the address can be used to spam your contact.
End of the story...