Steam Outage
The Steam services seem to be down this evening, with no reason or explanation given at this time.
A message from @Steam_Support on Twitter states that they are “investigating reported outages”, whilst a post by a community manager on the Steam forum noted that they are “working on getting everything running again as soon as possible”.
Update, 8.55pm: The Steam outage is down to a failure at Valve’s data centre. They are now working to get services restored as soon as possible.
Update, 9.25pm: Steam is starting to come back online now.