Can't sign-in Xbox Windows 8.1 - Error 0xc00d11cd (0x80004005)

When I try to sign-in in Xbox games in Windows 8.1, I write my password and when I click ok, it returns the following error:

Xbox service is not available at the moment
Try again. If the problem stills visit www.xbox.com/support for help
...
0xc00d11cd (0x80004005)

I already verified Xbox status at https://support.xbox.com/en-US/xbox-live-status but it is "up and running"

Already reinstalled Windows 8.1 and the problem stills

How can I fix this error?

Sorry if i'm misssing anything, i'm new user to Windows, I was using Mac OSX and sorry for my bad english...

After hearing of changes to my contract with Xbox, I solved this problem by logging into http://www.xbox.com/support with my account, then accepted the contract's modifications. (I was unable to find the latest updates!)