I have had the same  issues described by other users of Windows Live Mail since yesterday. I can send e-mails but can no longer receive them. I receive the following error message:

Unable to send or receive messages for the Hotmail (pegeen1942) account.

Server Error: 4102
Server: 'https://mail.services.live.com/DeltaSync_v2.0.0/Sync.aspx'
Windows Live Mail Error ID: 0x8DE00001

I have followed all the suggestions including repairing and uninstalling WMLMail and re installing it.

You know that this is a Microsoft issue but keep asking users to do various things that you know aren't going to resolve the problem.

I would like Microsoft to sort out this issue so that we can continue to use Windows Live mail please. Thank you!