Since you are going to the hotmail website - your computer security programs don't matter. unless you download a message or attachment

I haven't used hotmail for many years so I looked up some tips and FAQs.

Here are some Hotmail helps links-
http://help.msn.com/(ZmlsdGVyPURIX0Z...v10_ALTTOC.htm

under the FAQ tab-
Not receiving mail from contacts
If you aren't receiving mail that has been sent from people you know, it may be because your Junk E-mail filter or your Block Sender list has excluded them.
Please click one:
Check your Junk E-mail filter settings & Check your Block Sender list -
http://help.msn.com/(ZmlsdGVyPURIX0Z...OU_NoMail.htm#

Finding lost messages -
http://help.msn.com/(ZmlsdGVyPURIX0Z...stMessages.htm

there are other topics to explore on those pages so I hope they help.