How to successfully install Windows 10 Mobile build 14951 (workaround)

Microsoft recently began the rollout of Windows 10 build 14951 to the Fast ring. The new release includes some subtle improvements and fixes, and a few features for both PC and Mobile.

Although users quickly began updating their PCs to the latest version without a glitch, users running Windows 10 Mobile on their phones have been reporting getting stuck at zero percent while trying to download build 14951 on their handsets. Thankfully, there's a few workarounds.

Microsoft quickly acknowledged the issue and now has already narrowed down the problem to an issue that is only affecting phones which have been previously updated to Windows 10 Mobile 14946. The company says that is currently making the necessary changes to properly publish build 14951, and the same changes will be part of future flights to prevent users hitting this issue again.

In the meantime, the company is now offering a few workarounds (opens in new tab) to help Insiders successfully install Windows 10 Mobile build 14951 on their devices.

In this guide, we'll walk you through the four available paths to download and install the latest test Windows 10 Redstone 2 update on your mobile device.

How to install Windows 10 Mobile build 14951

Currently, there are four different ways to try and download the latest Insider preview build on your phone.

Fastest: Force the update session to time out

  1. Plug your device into a charger.
  2. Open Settings.
  3. Tap on Update & Security.
  4. Tap on Windows Insider Program.
  5. Change your device to "Slow" and then back to "Fast".
  6. Go to Network & wireless.
  7. Tap on Airplane Mode, and turn on airplane mode.
  8. Go to Time & Language.
  9. Tap on Date & Time.
  10. If On, turn Set date and time automatically to the Off position.
  11. Change the date on the device to 7 days in the future.
  12. Return to the home screen.
  13. Reboot your phone.
  14. After the reboot, open Settings.
  15. Tap on Network & wireless.
  16. Tap on Airplane Mode.
  17. Turn off airplane mode.
  18. Go to Update & Security.
  19. Tap on Phone update.
  20. Tap the Check for updates button. As expected this process will fail with an error code.
  21. Go to Time & Language.
  22. Tap on Date & Time.
  23. Change the device date back to the current date.
  24. Go to Update & Security.
  25. Tap on Phone update.
  26. Tap the Check for updates button. This check may fail again, but it's expected.
  27. Return to the home screen.
  28. Reboot your phone.
  29. Open Settings.
  30. Tap on Update & security.
  31. Tap on Phone update.
  32. Tap the Check for updates button and now Windows 10 Mobile build 14951 should begin to download.

Microsoft also notes that users may run into an error code 80242006 after this last update check, and to fix the error users need to use additional steps:

  1. Open Settings.
  2. Tap on Update & Security.
  3. Tap on Windows Insider Program.
  4. Change your device to "Slow".
  5. Go to Phone update.
  6. Tap the Check for updates button and wait until you get the message that your device is up to date.
  7. Go back to Windows Insiders Program.
  8. Change back to the Fast ring.
  9. Go to Phone update.
  10. Tap the Check for updates button, and your phone should now update.

Easiest: Wait

If your phone is already stuck at 0% trying to download build 14951, it will timeout after five days. After the update times out, your phone will get updated metadata, which will allow the device to download Windows 10 Mobile build 14951.

Medium: Reset to factory and update

You can always reset your device currently running Windows 10 Mobile build 14946 to factory default settings.

  1. Open Settings.
  2. Tap on System.
  3. Tap on About.
  4. Tap the Reset you phone button.

Once the reset is completed, you should now be able to download build 14951 without getting stuck at 0 percent.

Hard: Less optimal

In the case you already rolled back to a previous build, including Windows 10 version 1511 or Windows 10 Anniversary Update using the Windows Device Recovery Tool, you can easily download and install build 14951 without running into issues.

Wrapping things up

Although Microsoft has isolated the issue, keep in mind that these instructions are still being validated. However, if your device is stuck at 0% downloading the update, and you can't wait until the timeout expires or the company releases the next build, you can use these options to install the latest flight on your phone.

Finally, remember that some of this options will wipe out your phone, and as always, it's recommended to make a backup your data before proceeding.

Did, any of these options, work to install Windows 10 Mobile build 14951 on your device? Tell us in the comments below.

More Windows 10 resources

For more help articles, coverage, and answers on Windows 10, you can visit the following resources:

Mauro Huculak is technical writer for WindowsCentral.com. His primary focus is to write comprehensive how-tos to help users get the most out of Windows 10 and its many related technologies. He has an IT background with professional certifications from Microsoft, Cisco, and CompTIA, and he's a recognized member of the Microsoft MVP community.

258 Comments
  • Many if you guys have reported that this build is quite buggy do I think I'd best wait for the next build. The previous build is still working fine for me and also, this build doesn't have any new feature.
  • I think you should probably update to get away from this upgrade bug.
  • I used a combination of methods with the last being the stopping Windows Insider Program and then returning. Not sure which worked. A recent news says that Users can now make voice and video calls using the Facebook Messenger App in windows 10. Is it ?
  • Yep and any build newer than 10586 will work. (provided your phone has 2GB RAM)
  • The price of being an insider
  • Is everyone in the comments trolling or something? Like the first 5 comments are how buggy this build supposedly is without having installed it...(?!) but I've not had an issue yet, though it's just been a few minutes since install. No stuck at 0% for me though... I looked under updates once and it had already downloaded and just needed a restart. It just completed that and my ICON is ridiculously fast now. I don't know what that 8.1 Env (envy?) update was but mean, I'm loving it so far. Camera processing is quick, Hey Cortana works when I want it to and transitions and animations are lightning fast again. I'll keep using it to see if the battery is any better but so far it seems fine.
  • They're not trolling, they're just saying they may not get this build due to just how buggy some people have said it is, so they're gunna wait for the next build
  • To get update... So much procedure...OMG
  • Basically they make procedure in part so one can easily understand. This is what you have to do. Clock your time 7 days ahead by turning off flight mode. Reboot. Check update. Update will fail for obvious reason. Then again turn on flight mode. Check update. Update will fail again. Reboot. And check update.
    Thats it.
  • I went until Step 13 and now my Lumia 950 is stuck on Microsoft logo with constant restarts.
  • First try updated 925. But I still can't open Glance settings
  • Think I'm just gonna wait.
  • Yup. Anyways this build has nothing much to look forward to.
  • doesnt take that long! just did it! great method! i had to do the extra step too!!
  • "Insider" right?
    You signed up for this. Non insiders don't get this update
  • Seriously? They tell you when signing up to expect these kinds of issues. If you chose to participate or not read the warnings, that is on you.
  • Who forced you to subscribe to the fast ring?
  • Ummm... ever heard of a term beta? No? Look it up you might be surprised! ​Also what about all of the warnings they posted everywhere before you join. Did you read any of them? Get out of insider rings and go to production builds and move on with your life.
  • Exactly
  • The most ridiculus thing is the fact that even Redtone is as buggy as hell. Go figure... Insiders still reporting bugs of obvious things like :working operating system:. It is unbelievable how bad W10 is, even on official releases.
  • and you complaining so much with your big mouth even though the Windows Insider program was designed to have tons of bugs and issues.
  • Hmm the "fastest" option didn't work for me.
  • It didn't work for me either on my ICON. It isn't trying to download anymore either. I get an error with a retry button. I put my phone on slow ring and I'll wait for next build.
  • On my Lumia 930 running build 14946, it shows an update "Windows Phone 8.1 emv mandatory update build 14951 ...."
    .
    Why the heck is it saying that?
  • It did work for me with the additional steps. Lumia 640XL.
  • worked for me on Lumia 650
  • It's more easy to leave the insider programe or to use recovery tool
  • Ha Haa Haaaa that is so funny, come on guys where is your sense of humour, kudos to whoever worked that 1st workaround out !!!
  • One must be a die-hard member of the Insiders to go through this ridiculousness. Fixed: Nothing. Broken: Everything.
  • Everyone said they wanted more frequent fast ring builds, Microsoft said they didn't want to because it would mean more bugs. Everyone still persisted that they wanted more frequent builds. Microsoft gave the insiders what they wanted. Now everyone complains that the fast ring builds are too frequently and too buggy.
  • I never complained about the build itself being buggy. It was the installation procedure I commented about. I have been ages in the fast ring and I acknowledge and accept all the issues that may arise using that particular build.
  • This is also a result of a bug, many times in the past we rolled back to update if you remember 8.1 preview days. This is no different than those.
  • Ahhh those days !!!! ☺
  • I remember doing this many steps for way back build 9986
  • There are already 4 rings and you CHOSE to go with the fastest and riskiest and you guys still complain. What do you want? 6 more rings? Faster Fastest Really Fast Seriously Fast! I'm-not-kidding-goddamnit Fast You-are-a-fool-if-you-join-this-ring-because-it-is-guaranteed-to-brick-your-phone Fast
  • Yeah please... I will be happy to join number 5. Lol.
  • Engage ludicrous builds...
  • I would join this build ring :)
  • This had me rolling in laughter. You forget to mention my preferred ring, "Warp-speed-ahead Fast".
  • To-Infinity-and-Beyond fast Ring
  • No kidding
  • I'm going to sneak into @ZacB_ house and select option 5 "You-are-a-fool...." on his HP Elite x3 and then run away so that he would be stuck with a brick and he would have no idea who it is. ;)
  • Take your limp wrist and go get a shiny iPhone then.
  • Even that is too much work for that dude. The only thing he is likely to achieve is gaining mass by eating tons of junk food and complaining here
  • Waiting is the lazy and more risk free way...hence i am gonna wait. Thanks a lot MS
  • I just use the Release Preview ring as those builds tend to be the most stable, I haven't had any major issues on that ring.
  • Fastest option works for my 950XL.
  • Annnnnd I was going to say here too, but have the error code lol
  • Done the extra bit - Now at 3% and downloading !!!
  • Yup, I did the additional steps too
  • Same here with my x3, I needed the extra step, but it's upgraded now. :-)
  • I'm at 0.125% How is that even possible?
  • Did it this morning on my 950XL, worked great. Build installed and loving it, 20 minute boot up times and all! :)
  • I'm still stuck at Microsoft logo reboots
  • Hey gonna try it , that's why I'm here.
  • Whoooo!!! Somebody understands what Insider means! ​If I could give you a gold star I would :)
  • That did the trick here! Thanks!
  • Thanks for sharing the results. Glad it worked.
  • Same here. I actually expect these things on Fast Ring and assume I am risking a full reset on this ring with each release. Simply move to a slower ring if you it annoying, that's why those options are there.
  • So i just checked back this morning and new update shows, but with a ridiculous title -- "Windows Phone 8.1 Preview Env Bundle - OS 10.0.14951.1000 "
    So pathetic, unless I am missing something...
  • Yes, I'm getting the same. Eager to install 10.0.14951, but not if its going to break/brick my 950xl with something W8.1 related... has anyone had any success installing the update with this strange title?
  • installed on 950XL, seems smoother than 14946, haven't seen automatically reboot issue until now
  • Have tried the factory reset method. The OS build is 14946.1000 right after reboot which seems to be the build which causes problems. Although I haven't switched to Insider Fast yet.
    ​When I try to update (to Slow or Fast flight), I get 0x8024800a. Off I am for a complete recovery ...  
  • I had that too !!!
  • Had the same issue this morning but following the "fastest step" with the additional steps did the trick.
  • Yep, had that too. I thought for a moment I might be in a DeLorean going back in time. But turns out it was just another part of the bug.
  • I got this also without prompting. Way faster than before. Is it supposed to mean WP 8.1 envy? LOL What I mean without prompting is I just went to Update and Security and it was there waiting for the right time to reboot. I just woke up and saw it updating now. My phone is silky smooth now for the most part. Feels like Windows Phone again!
  • I did another Method of myself:(EASY AND FAST) Just Do This: 1.Go to "Windows Insider Program". 2.Click "Stop Insider Builds" And set it for "1 day". 3.Then Go to "Phone updates" And click "Check for updates". 4.Wait till shows "Your Phone is Upto Date". 5.Then Again Go to"Windows Insider Program" And Click "Resume". 6.And check whether it is "Fast". 7.Then Again Go to "Phone Updates" And click "Check for updates". Your Build 14951 Will START to get Download  Welcome :)  
  • Nice! :)
  • Did This Worked For You? :)
  • Yes, its worked. I tried the "fastest" one first, but that didnt worked. Send the tip to Windows central! :)
  • Didn't work :(
  • hello. i was able to install the build in my lumia 950 xl u.s. version, but i had error 80242007 (different from the 80242006 error mentioned) initially. i changed the date to october 30 because changing the date to october 27 didnt work for me and it installed.
  • Tried FASTEST option. Got error code 80242006  Followed the steps for this error. Worked on both my L930 and 950XL  
  • Seems like a better solution would be for Microsoft to pull the build and re-release it without the download issue.
  • And where would the fun be in that may I ask ??
  • That's not how this works... The point in the program is to kind of have these issues so they have more information. Data is data. Positive or negative results are still results. That is science friend!
  • They are making changes and are going to rerelease it but no need to pull the build if we could install it successfully if we wished. I got it done with no problem. This is what they said:
    THANK YOU to all the Windows Insiders who have provided us feedback on getting stuck at 0% while trying to download Build 14951 on their devices. We have narrowed this down to a new issue that only seems to affect devices on Windows 10 Mobile build 14946. We are making a change to how Build 14951 is published, so that Insiders can avoid hitting this issue. We will also make the same changes when we published the next build so Insiders do not hit this when upgrading to newer builds.
  • First process worked for me. Downloading now and not stuck on 0%.
  • Anyone else stuck on 49%? Weird thing is after being stuck on 49% I restarted the device and now it's preparing to install. This is one weird update process.
  • Lol alot of things about windows 10 mobile is weird, its actually cute. Like the phones have a mind of their own. I love this OS though.
  • Yeah, I can wait.  This particular build doesn't seem worth it anyhow.
  • Are the insider builds not meant for us to help fix and shape the ecosystem, seems odd to wait as not worth it ??
  • Stability has improved for me, so that's a plus :).
  • The time trick worked fine on my 950
  • They missed a step where you need to kill a squirrel and put some butter on your body, before rebooting.
  • Damn it! I put the butter on the squirrel now can't catch the little blighter
  • Another day in the Fast Ring, Workaround works..... Next!
  • Still have the Fierce XL?
  • This is the fast ring for you hehe. Strangest workaround I've ever seen in a mobile phone's OS but if it works it works!
  • Fastest fix is working L950
  • YES! FASTEST WORKED FOR ME 1520 UNLOCKED HERE :-)
  • Wow, I thought I was the only insider that still had a 1520. How is it?
  • Lol. I love it. It's been my daily since day one in 2013 lol. Never had a mess up yet. I follow directions and im patient. How is yours?
  • It's great. Just got it about a month ago on ebay. This is actually my first high end Windows Phone. I can't go back to mid range or low end.
  • Yeah once you go to flagship you will never go back lol. Good luck. It's a great phone
  • Went through the 42 steps and the build is downloading, 14951 (RS_Prerelease).Thanks for giving the workaround. 
  • Updates are available.
    Windows Phone 8.1 Preview Env Bundle - OS 10.0.14951.1000 update for all mobile phone devices....
    I don't know about you guys, but this is the update my phone is stating it is available...Windows phone 8.1. What is going on. Anyone, please let me know what is going on. Going to the past Friday.
  • It's okay. Windows 8.1 is better anyway.
  • My phone wouldn't stay in the future, kept changing back to today....
    But it's downloading anyway after the 80242006 :-)
  • I think i will hold my horses and wait
  • I didn't have any horses to hold, so I went for it :) ​Working great so far
  • Well, that was a fun 45 steps to follow to get an update.  I hope it isn't buggy.  
  • All is fine now . And Update working fine . After do the procedure as MS mention on this Article. Many thanks MS . Now my turn to start test and give Feedback for this 14951 build .
    Many many thanks MS . Ur super as usual.
  • I don`t know if i should just wait the next update or take this as a challange :D
  • Challenge accepted :) ! Preparing to install 5% .. seems it worked
  • Was able to get the update following the Fastest method along with the additional steps for the 80242006 error.
  • my 950XL already stuck at 0%.  
  • I'm not sure this will work for everyone who has the massively annoying 30-min boot up times on 14946, but updating to 14951 seems to have fixed it for me. Totally worth it. Side note: it takes less than 10 mins to complete the workaround -- change the dates, switch to slow, reboot, update (will say it's up to date), switch to fast, and boom. If anyone has ever had to write step-by-step instructions for anything technical, it always looks more daunting on paper than in practice.
  • Followed to the letter, worse mess than a download battery drain.
  • Manipulating the clock is always a very bad idea with many other unwanted side effects. Refrain from it under all circumstances.
  • You might inadvertently rupture the whole space time continuum!!!
  • Seems complicated,...it's not...
    Just finished update...
  • Up, Up, Down, Down, Left, Right, Left, Right, B, A, Select, Start.
  • I am still in windows phne 10.0.10586.545 and i cannot update to latest release ring , i am very sad , do not know how to update!!!!! So sad!!!!
  • .
  • I cannot as my insider option is not in update menu in settings but in app and whenever i set fast or slow my phone restarts and cannot do the steps properly
  • Is it a really old phone, unfortunately not all phones that reach windows 10 can work on AU or RS2. It might be worth checking if it is compatible as if it is not you might be wasting your time trying. Failing that, if it is compatible you may be able to force it with the Windows Device Recovery Tool ------ Be warned this will ERASE all of your phones contents in the process!! Use at own risk!!!! ------
  • where can i find the compatible phone list for the preview version of the rs2? I am using Lumia 820
  • If there was even just one new feature in this build, I would have gone through this circus act to get it installed. #pass
  • ​It didn't work for me.
  • worked for me on lumia icon. fastest option then got the error and went through those steps. even though all of the negative reviews on this build i'm still going to install it anyway because why not.
  • I've opted out for the 5 day period for my 950XL. The last 3 Fast builds for desktop have especially been problematic considering the 3rd part antivirus issue. I am starting to lose patience with these weekly Fix-5-Items-Break-7 Insider builds.
  • It is insider after all... that's the way these things go
  • I've been an insider fast since the start. I don't complain much and understand all of this is needed to vet future public releases... But.... Gimme a @%#(!$¥ break
  • Worked for me. Thanks guys
  • Wow!  Meanwhile, those of us using Apple hardware and OSs are busy getting work done. That's why I no longer waste time keeping Microsoft crap running. Life is too short to do the work of their so-called "engineers" and "developers" for them. I'm also SO over dealing with "undocumented features" just like this train wreck!  Somehow, Microsoft is under the delusion that they're "innovating."  What a laugh!
  • Yeah, people in the preview program should never expect issues with unreleased software!
  • Are you serious apple is the least innovative company on earth all the do is copy and still and the phone are junk made to break if sneezed on and is alway out of date spec wise on day one go away troll
  • Laugh all you want. Insiders is hard work and helping to create something better for everyone. So that those in production build can have an easier life. You know Apple has the same issues during development, but they are tested in-house. Lots of people make fun of Microsoft for getting rid of QA and using Insiders instead. In my opinion, it's awesome. It's what I love to do. And that is exactly the point of Insiders. If you are not good at technology and don't like to perform workarounds or do other tasks that you find "boring" or "ridiculous" then move along. Nobody is forcing you too. I'm glad you found a platform you like. Apple is fine. They have a very simply OS design so that even a baby could use it. I like my OS and platform and no matter what criticism somebody throws at it, I am staying. ​You stay on the Apple side of the fence, I'll stay on Microsoft side of the fence. You don't see me blasting Apple on iMore. I have no desire to troll other forums, each OS is great in its own way. Move on with your life and get over it
  • well said
  • Lumia 950 Followed the steps. But still getting the 80242006 error.
  • The workaround with changing the date and all works but be warned that the Outlook Calendar live tile may become stuck on that future date and will no longer update. After trying several things to fix the problem I'm doing a hard reset now.
  • Just uninstall mail and calendar then go to store download them. Work for my 950.
  • Thanks, although I already did the hard reset (and restore from backup). I never realized Outlook Mail & Calendar will uninstall now. With RS1 or earlier there was no uninstall option so I never bothered to check if that had changed.
  • Exactly how can you just unistall mail and calendar?
  • there is no option to uninstall Outlook Calendar and Mail in my L640...
  • This method worked for my 950 XL DS US   1.Go to "Windows Insider Program".
    2.Click "Stop Insider Builds" And set it for "1 day".
    3.Then Go to "Phone updates" And click "Check for updates".
    4.Wait till shows "Your Phone is Upto Date".
    5.Then Again Go to"Windows Insider Program" And Click "Resume".
    6.And check whether it is "Fast".
    7.Then Again Go to "Phone Updates" And click "Check for updates".
  • this does not work because update remains in the queue...
  • Has any been syncing their phone to macs... Mine would not
  • I followed the procedure mentioned, result is error 0x8024800a
  • Same here: 0x8024800a​. Will try to recover over USB from scratch.
  • Try again first. I had the same error then switched to slow ring...then then checked for updates...then switched back to fast then checked and it downloaded
  • Thanks for the hint, but it didn't work out. So I went through full recovery over night and Insider Fast. I'm back now, but I have a desption: Before this whole procedure I had side-loaded a newer version of Gadgets. Now I have regressed to the previous version which is a complete failure. I don't understand why MS doesn't do some housekeeping in order to get basic functions right and then keep them while advancing on the Insider rail.  
  • I had the same error and then ran through the long process mentioned in the article and after the 1st restart, turning airplane mode off, and then checking for updates again it started downloading correctly.
  • Finally, it's downloading...
  • I already downloaded this build with the steps but for some reason when I changed the date and after rebooting it would change the date back, don't know why
  • My god. What an ugly hack. Do they never test anything before releasing it to the public?
  • It's not released to the public. It's an Insider Preview Fast Ring build.
  • Reading isn't your strong suite is it?