I've got an HTC One X - and up until the last week, for some reason, the sync'ing isn't happening between my Outlook, my phone and Hotmail.  Any ideas or suggestions as to what to check?

Thanks.

Unable to send or receive messages for the Outlook  account.

Server Error: 3204
Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x8DE20003

Any suggestions how to resolve this? First I am unable to access messages on my phone now the problem haas shifted to my laptop
Hello my hotmail account has been hacked. The phone number attached is an old number no longer in service and the password reset email has been changed by the hacker. I have tried the identity validation by providing information but received an email telling me that "Unfortunately, we were unable to verify your ownership of this account using the information you provided" would it be possible to either a) receive a PM allowing me to prove the ownership of this account. or b) deleting the account and all its content

Thank you
I cant access my Hotmail inbox. I have changed my password under https://account.live.com/password/reset, had a security code emailed to my back up email which I entered successfully, had my phone called with a security code which I entered successfully, and still can't access my Inbox. I can log in but can't access anything.
This started about 10 days ago and I have no idea why.  My phone provider has checked the settings and says everything seems fine but I keep getting the message 'cannot connect to mail server to verify your account' when I have deleted the account and try to set it back up.  I have download the Hotmail App but I preferred the old way as my inbox is now getting too full on my phone as I cannot deal with everything immediately.  How do I get it back the way it was. 
I'm using a LG840G cell phone with Tracfone service.  When I go to Broweer, I select email, then Hotmail.  At that point I'm provided the logon for Windows  Live.  After entering the correct ID and password for my account, I receive a message saying the information is incomplete.  What's missing?
 I merged as suggested but do not like. I was quite happily using both Messenger and Skype.  Every time I tried to message on my Skype, which I do ready for my Skpype person to see if I didn't actually want to video call them,  it made a phone call. So I unmerged, and now I cannot seem to restore my Open up Messenger on Startup. I liked it that way. Any help please I have Windows 7