Just curious to what this is... I use Google Chrome as my default browser. When opening email via Windows Messenger I get this in my address bar for a second or two before it takes me to the login page before opening my email inbox etc.
Using IE it opens emails straight away without having to login but Chrome does its own thing.
Done a google search for it and got this...
I've already done a Nod32 scan and MalwareBytes.. nothing found. Is it merely a safe redirect link or an error on either my behalf or MS