Maybe there is just a temporary issue with the .NET framework online documentation, but I am having a real issue searching for and finding 'IsBackground'
If I search for 'IsBackground' from either google or the MSDN search box. [ https://msdn.microsoft.com/en-us/ ]
I get this link:
https://msdn.microsoft.com/en-us/library/system.threading.thread.isbackground(v=vs.110).aspx
But that link reports "page requested cannot be found"
I tried navigating it by hand, and did find it at:
https://msdn.microsoft.com/en-us/library/8xt7a4zy(v=vs.110).aspx
So, it seems like the cached links at both google and whatever MSDN search is using are wrong. [Bing also returns the wrong result]