How to download Windows 10 Insider builds as quickly as possible

Windows 10 can adjust the amount of bandwidth your device uses to download and upload system and app updates automatically. However, starting with preview build 16237, Windows 10 introduces a new set of options that allows you to override the dynamic bandwidth allocation to specify the exact amount your computer should use for updates.

Although these options are meant to reduce bandwidth consumption, it's possible to configure your device to take full advantage of the bandwidth available to download Windows 10 Insider builds faster through Windows Update.

If you have already enabled the Delivery Optimization option to allow your device to download updates from other machines on your local network and on the internet in addition to the Microsoft servers, preview builds can download even faster.

In this Windows 10 guide, we walk you through the steps to override the Delivery Optimization settings to ensure new Insider builds can download as fast as possible on your device using the Settings app and Group Policy.

How to download Insider builds faster using Settings

If you want to allow Windows 10 to use the total bandwidth available on your device to download Insider preview builds faster, follow these steps:

  1. Open Settings.
  2. Click on Update & Security.
  3. Click the Advanced options link.
  4. Click the Delivery Optimization link.
  5. Turn on the Allow downloads from other PCs toggle switch.
  6. Select the PCs on my local network, and PCs on the internet option.

  1. Click the Advanced options link.
  2. Under "Download settings," check the Limit how much bandwidth is used for downloading updates in the background option.
  3. Use the slider to allow Windows Update to use 100 percent of the bandwidth available to your device.

Once you've completed the steps, Windows Update should download new previews of Windows 10 faster than before.

At any time, you can return to the previous settings using the same instructions, but on step No. 5, make sure to change the option to your previous selection, and on step No. 8, clear the Download settings option or return the slider to the percentage you had it at before.

While we're focusing on the download settings, on the Advanced options page, it's also possible to set the specific amount of bandwidth your device uses to upload updates to devices on the internet.

How to download Insider builds faster using Group Policy

Alternatively, if you're running Windows 10 Pro, it's possible to adjust the Delivery Optimization settings using Group Policy with these steps:

  1. Use the Windows key + R keyboard shortcut to open the Run command.
  2. Type gpedit.msc and click OK to open the Local Group Policy Editor.
  3. Browse the following path:Computer Configuration > Administrative Templates > Windows Components > Delivery Optimization
  4. On the right side, double-click the Download Mode policy.

  1. Select the Enabled option.
  2. Under "Options," use the "Download Mode" drop-down menu, and select the Internet (3) option (the equivalent to "PCs on the local network, and PCs on the Internet" option in the Settings app).

  1. Click Apply.
  2. Click OK.
  3. On the right side, double-click the Maximum Download Bandwidth (percentage) policy (the equivalent to the "Download settings" option in the Settings app).
  4. Select the Enabled option.
  5. Under "Options," enter the download bandwidth in percentage, and because we want to download Windows 10 Insider builds faster, enter 100.Note: We're not using 0 (unlimited) because that will trigger Delivery Optimization to adjust the settings dynamically, and we're looking to take full advantage of the bandwidth available to download new builds.

  1. Click Apply.
  2. Click OK.

After completing the steps, just like using the Settings app, your computer should download Windows 10 Insider builds faster.

You can always revert the changes following the instructions, but on step No. 5 and step No. 10, select the Not configured options.

It should be noted that using the Group Policy option will cause the Settings app to display a Some settings are managed by your organization message, which will go away sometime after disabling the policies.

While the ability to control the bandwidth used for download and upload updates in the Settings app is part of the upcoming Windows 10 Fall Creators Update, the Group Policy options have been available in the OS for quite some time.

Wrapping things up

Although these tweaks can help you to speed up the download process of development builds, you should be aware that allocating a high amount of bandwidth for updates using the advanced Deliver Optimization options can affect your internet experience. If this is a concern, you could enable these settings only when a new build is rolling out, or simply let Windows 10 dynamically optimize the bandwidth for you.

Also, these settings adjust the bandwidth behavior on your device only, not on the network, which means that if other devices on the network are clogging the internet connection, the download speed on your machine will be affected accordingly.

More Windows 10 resources

For more helpful articles, coverage, and answers to common questions about Windows 10, visit the following resources:

Mauro Huculak is technical writer for 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.

  • I recently downloaded the latest  windows 10 insider build using slow  ring. Immediately my laptop has started acting very weird. It  has become very slow and most of the apps do not work propery. Edge and some other apps where typing is invloved are giving me extra problems. When you want to type something and click on the address bar, the app just stops responding. Also, my C Drive storage has gone down to 13gigs from 29gigs after installing the build. Any solutions/suggestion, please.
  • The upgrade stores a copy of your previous installation, so you can rollback if there are problems. If you don't want to roll back, use the Disk cleanup tool to delete the previous install and free up the space
  • What happens if I roll back? Will it wipe out my laptop completely or just the C Drive? Also, how do I roll back? Thanks for your help :)
  • It will restore your laptop to the state it was in before installing the update.
  • Please take this to forums you will find more people to help you with.
  • Don't expect a bug free experiance from Insider builders; they are very beta in some cases. Good practice is to have Insiders on dual boot, VM or spare PC. 
  • I had to set this via group policy. Using settings, it kept switching back to just PC's in local network.
  • Using 10 Home 16257, you can change the settings, but they don't stick. Gives all the registry keys for under Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\DeliveryOptimization
  • How funny, build 16273 fixed the issue of settings not sticking. :P
  • I had chosen release preview, but ended up getting Slow ring randomly, and I got the ctfmon.exe crashing every 3 minutes that didn't change across builds, so I completely withdrew and reinstalled Windows Creators on my PC. I don't think I'll hit up Insider for the time being.
  • None of the settings stick might not be ready yet.
  • I don't get the sense of the article not the download speed is the problem but the new background installation
  • The group policy editor setting is also available in the current 1703 version. So after setting Internet(3) from LGPE, it is shown 'Some settings are hidden or managed by your organisation on Settings Page.