Windows 10 Mobile Build 10586.29 arrives for new devices

Microsoft closes out a busy four days by delivering the latest Windows 10 Mobile build to some of the latest devices on the market.

Richard Hay, Senior Content Producer

December 7, 2015

2 Min Read
Windows 10 Mobile Build 10586.29 arrives for new devices

The last four days have been busy ones for the Windows team at Microsoft.

It began late Friday when they released Windows 10 Mobile Build 10586.29 to Windows Insiders for testing - a unicorn of a release since it was both a Friday and very late in the day.

In that announcement we were told that new handsets, including all three of the recent Lumia releases (550, 950 and 950 XL), would also be added to the Windows Insider program early this week.

Alongside of that announcement was news that the Windows Device Recovery Tool (WDRT) that would contain the original release images of those new devices, plus the one for the LG Lancet, would be released - also scheduled for early this week.

Well their early this week was first thing this morning here on the East coast of the United States as the WDRT received its update to version 3.1.5 which contained support for the new handsets.

Now, just a few hours later, the new Windows 10 Mobile build is rolling out to Windows Insiders on those four new handsets. 

This update will bring the released version of the three Lumia devices from 10586.0 to 10586.29 so it is just an incremental update for the retail handsets so do not expect new features or anything like that. Based on the initial announcement by Microsoft on Friday, this update is a cumulative one and will primarily focus on performance improvements and bug fixes.

Some of those fixes include:

  • You will see additional improvements in upgrade experience, including devices with limited free space, map rendering on update, and RCS enabled device settings.

  • Improved application backwards compatibility for Windows Phone 8.1 Silverlight applications.

  • Edge performance and stability has been improved.  Auto-completion has been updated to allow user to more easily edit the end of the URL in the address bar.

  • Additional Bluetooth stability improvements.

  • We have resolve issues on switching the active cellular connectivity profile on Dual SIM devices.

  • Data profiles are now correctly restored in the out of box experience that would prevent some devices from sending or receiving MMS messages.

The next step is to wait and see if Microsoft pushed this build out to the general public before they go into stand down mode for the holidays.

But, wait...there's probably more so be sure to follow me on Twitter and Google+.

About the Author(s)

Richard Hay

Senior Content Producer, IT Pro Today (Informa Tech)

I served for 29 plus years in the U.S. Navy and retired as a Master Chief Petty Officer in November 2011. My work background in the Navy was telecommunications related so my hobby of computers fit well with what I did for the Navy. I consider myself a tech geek and enjoy most things in that arena.

My first website – – came online in 1995. Back then I used GeoCities Web Hosting for it and is the result of the work I have done on that site since 1995.

In January 2010 my community contributions were recognized by Microsoft when I received my first Most Valuable Professional (MVP) Award for the Windows Operating System. Since then I have been renewed as a Microsoft MVP each subsequent year since that initial award. I am also a member of the inaugural group of Windows Insider MVPs which began in 2016.

I previously hosted the Observed Tech PODCAST for 10 years and 317 episodes and now host a new podcast called Faith, Tech, and Space. 

I began contributing to Penton Technology websites in January 2015 and in April 2017 I was hired as the Senior Content Producer for Penton Technology which is now Informa Tech. In that role, I contribute to ITPro Today and cover operating systems, enterprise technology, and productivity.

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