answers.microsoft.com/en-us/ie/forum/ie9-windows_7/the-windows-live-network-is-unavailable-from-this/efc8f119-9846-48f1-8adb-7573cdbc0bf6

You could easily resolve this issue by enabling your internet explorer to accept secure mail certificates.



To do this, simply follow these instructions:



1. Internet explorer 8 or 9 version => Tools => click 'Internet Options'



2. Content (tab) => click 'Certificates'



3. Personal (tab) => click 'Advanced'



4. Inside certificate purposes, enable 'Secure Email'