Windows 10 Mobile build 10586.63 releases as the third cumulative update

Microsoft quietly pushes Windows 10 Mobile build 10586.63 to the Fast ring of updates with minor fixes and improvements.

Windows 10 Mobile on a Lumia 950 XL during the Microsoft Device Night 2015 event

On January 8th, Microsoft begins the roll out of Windows 10 Mobile build 10586.63 for devices enrolled in the Insider program. The new build is being released as the third cumulative update, and the first of 2016, for mobile devices, but we’re not expecting to see any major features or changes.

According to a Tweet from Microsoft’s Gabriel Aul, Windows 10 Mobile build 10586.63 doesn’t contain any new features, instead it fixes a number of problems and a few other things “per device model.” And we can see that the build number changes from 10586.36 to 10586.63.

Windows 10 Mobile build 10586.63 is available immediately through Windows Update for those who opted into the Insider program for phones using the Windows Insider app. The update will download and install automatically, but you can always go to Settings > Update & security > Phone update and tapping the Check for updates button.

Update, January 8, 2016: It appears that Microsoft has come across and that is causing to temporarily halt the availability of the new update. However, they quickly found a solution and has resumed the roll out to the Fast ring of updates.

Update, January 9, 2016: While officially, Microsoft isn’t sharing any details on the changes for the newly released update for the mobile version of the operating system, a Microsoft employee has posted on Reddit the changelog for Windows 10 Mobile build 10856.63, which you can see below:

  • Typing on Polish keyboard in Outlook Mail
  • Turn by turn directions over Bluetooth in car
  • Battery usage with Iris Reco
  • Reliability of quick actions settings page
  • MS Band use with Cortana

As you can see there aren’t major changes in this release, but some people are also noting that the new build actually feel faster and more complete, which would make sense considering that the company is close to finally release the mobile operating system to the public.

If you have already checked for updates and your phone isn’t seeing build 10586.63, give it some time and check again, as rolls out are never available to everyone at once.


About the author

Mauro Huculak is a Windows How-To Expert who started Pureinfotech in 2010 as an independent online publication. He has also been a Windows Central contributor for nearly a decade. Mauro has over 14 years of experience writing comprehensive guides and creating professional videos about Windows and software, including Android and Linux. Before becoming a technology writer, he was an IT administrator for seven years. In total, Mauro has over 20 years of combined experience in technology. Throughout his career, he achieved different professional certifications from Microsoft (MSCA), Cisco (CCNP), VMware (VCP), and CompTIA (A+ and Network+), and he has been recognized as a Microsoft MVP for many years. You can follow him on X (Twitter), YouTube, LinkedIn and Email him at [email protected].