Although the recent Insider release and now the official release of Windows 10 Mobile build 10586.29 seems to be going well for users, there are some hiccups. One recurrent theme we have seen is a small batch of those with the Lumia 950 not getting either the Insider release from last Friday or the current non-Insider push starting today.
Microsoft is aware of the issue and investigating, which is the good news.
The bad news is there is not a clear-cut answer as to how to fix it (outside of a hard-reset). From the Microsoft Answers Community, Jason[MS], a forum moderator, responded with where they are and noting:
"Yes, this is an issue we're actively investigating… Definitely have the right Engineering folks engaged internally and this is getting lots of attention. I can't commit to a specific timeline for a fix unfortunately, namely because we don't fully know what the issue is at this time."
For now, Microsoft is not recommending users go through the trouble of hard-resetting as they believe they can solve this without such recourse.
"Doing a hard reset does fix the issue, but we're not asking all users to go that route yet while we investigate. Working to see if there's an alternate fix available."
Unfortunately, these issues can happen as Microsoft gets used to pushing out more frequent mobile updates to their new Lumias. If you would like to assist Microsoft in solving this problem, you can go to the Community thread linked below in our 'source' and see if you can lend a hand.
Windows Central will keep you posted on any further developments on this issue.