Update: Xbox One Black Screen Error Fixed
Update: Microsoft has fixed the error, and it looks like everything is running normally.
Original Story: As of this afternoon, gamers turning on their Xbox Ones have reported (and we've experienced it ourselves) that the console won't let them sign in. Instead the console goes straight to a black screen.
Microsoft has acknowledged the problem, and at the time of this writing the company says it believes it has identified the issue.
In our experience with the problem and from anecdotal reports, users can get past the black screen (we pulled the power cord from ours and plugged it back in) but won't be able to sign in.
We'll update this story if we hear more from Microsoft.
We are aware of reports of Xbox One console startup, title update and sign-in errors. We will keep everyone informed once we have more information to share. Thank you all for your patience.— Xbox Support (@XboxSupport) January 30, 2019
Our teams have identified the cause for our earlier issues and are continuing to address these now. Thank you for your patience, we'll update again when we know of any other changes.— Xbox Support (@XboxSupport) January 30, 2019