We inform you that, at the time of this writing, Microsoft reporting services basic problems of Xbox Live, which prevents the login either online on Xbox Xbox 360 One. The support team is currently working to resolve the problems, but until then you may have problems to access or connect to Xbox Live, getting the 0x87DD0019 error console. Until it is fixed, the only way to be able to access will use the "go offline" in the network settings, which will allow you to play the single player titles.

Update: the problem has been solved and Xbox Live is now working again.