I cannot get my PC based Outlook 2010 to synchronise with my domain email set up in Outlook.com. My mobile device is working.

I have successfully set up my own domain email in Outlook.com. It is connecting and synchronising with my mobile device and the mobile device and the web account is active and working. When I set this up last week, my PC Outlook 2010 appeared to successfully synchronised all my email, contacts and calendar with Outlook.com i.e. they all appeared on the web Outlook.com account and my mobile device, BUT now it isn't working.  When I try and connect my own domain account using Outlook 2010, the dialogue box says "processing", but it never quite processes. I can send email, but cannot receive email. The email from my PC Outlook is no longer synchronising with Outlook.com or my mobile device. When I use my normal "live" email in Outlook 2010, in the lower right corner, where it shows connectivity to server, it shows as "Connected to live Hotmail". Email, calendar and contacts all synchronise with my PC version of Outlook, my mobile device (Android phone) and the web "live" email, this isn't happening with my domain email

Outlook Connector is set up and when I look at my Outlook 2010 account settings, my own domain email shows as having been set up as a MAPI account successfully, so it should work, but it isn't?

Can you help me?

Regards, Craig ABC