saverio13,
The servers are up and available. Just tested.
The last time this happened there was a severe outage. I beleive it was over the Thanksgiving weekend. Seemed like there was not enough capacity, possibly bandwidth or server.
Once the servers were available, we had to log out and log back in. After doing that everything worked.
A couple other things you can do if that doesn't work.
-Verify your internet connection is stable. In a Command window type ping www.yahoo.com -t
Watch for stability in the response times. A stable response out of Chicago is 30 - 40 ms. If you receive any 'Destination is not available' messages, you are dropping packets.
-Scan your machine with a Reputable virus / Rootkit scanner.
-Reboot your router and make sure the firmware is up to date.
-Use a hardwired connection. I was using an 802.1n connection, and was having intermittent performance issues. For FS, hardwire is the way to go.
If all of the above fails, you may want to consider reinstalling. I've reinstalled twice since release. It blows! but fixed my issues. I may have to install yet again as when I exit a flight to go back to the main menu, it takes me to the desktop. This
started with update 1.11.6.0.
There is also a repair button in Settings> Apps> Flight Simulator. but I can't get it to work. When the button is pressed, nothing happens. Maybe it's my machine. No way for me to tell, unless another tries it.
Hope this helps.