Windows 10 Build 14291 ships with Edge Extensions support, sort of

Martin Brinkmann
Mar 18, 2016
Updated • May 22, 2018
Internet Explorer, Windows 10

Microsoft shipped build 14291 of Windows 10 to the Fast Ring insider channel a few hours ago, and with it an update for the system's default browser Microsoft Edge that introduces initial support for extensions.

The version of Microsoft Edge that is available on stable builds of Windows 10, does not support extensions currently but Microsoft plans to change that this year by integrating an extensions engine to Edge that is very similar to that of Google Chrome.

The benefit of the approach is that it is easy enough to port Chrome extensions to Microsoft Edge (and vice versa), the downside that extensions, at least in their proposed state, won't be as powerful as Firefox's (Mozilla moves to WebExtensions as well).

Insider Builds are preview builds that are tested by developers and tech enthusiasts, and support for extensions in Microsoft Edge shows why Microsoft decided to ship a preview first.

While Edge supports extensions in build 14291, the implementation is not final which shows when you begin the process of installing one of the three extensions made available by Microsoft.

Instead of downloading extensions from Windows Store, where Microsoft plans to offer them once they launch in stable versions of Windows, they are sideloaded currently.

Initially our Insiders will download and then sideload extensions for testing purposes, but ultimately we will make extensions available to all of our customers via the Windows Store to ensure the quality of the end-to-end experience.

The process as it stands currently

edge extensions loaded

  1. Click on the three dots in the upper right corner of the Microsoft Edge window and select Extensions from the menu that opens.
  2. Click on the "Get Extensions" link. This opens a preview page on Microsoft's Windows website listing all extensions currently available for the preview release.
  3. Click on download to download these to your local system.
  4. The extensions are provided as .exe files currently. You need to run them individually which extracts them to the local system and displays a readme file with instructions.
  5. Once extracted, select Extensions > Load Extensions in Microsoft Edge and pick the folder they have been extracted to, to sideload them in the browser.

The Edge Extensions

Microsoft ships the Insider build with three extensions: Microsoft Translator, Mouse Gesture, and Reddit Enhancement Suite.

Mouse Gestures adds an icon to the main menu of Microsoft Edge which you can click on to open the settings provided by the extension but not remove. To use the Mouse Gestures extension, simply right-click on a web page and start to draw to run commands such as back, forward, or close current tab.

mouse gestures

Reddit Enhancement Suite works for the most part like the extension for other browsers. It improves the experience on Reddit by adding functionality and customization options to the site.

reddit enhancement suite

Microsoft Translator adds an icon to the address bar of Microsoft Edge that you can click on to translate the page into the default language. It ships without options currently which means that you cannot change the target language or make other modifications currently.

microsoft translator

Developer Setting

unpacked extensions

A new Developer Setting has been added to the most recent version of Edge that defines whether unpacked extensions can be loaded in Edge.

The setting is turned on by default but you may change its state in the following way:

  1. Load about:flags in the Microsoft Edge web browser.
  2. Under "Developer Settings", check or uncheck "allow unpacked extensions to be loaded".
  3. Restart Edge.

Microsoft promises that partners are already working on bringing extensions such as Adblock Plus, Amazon, LastPass or Evernote to Microsoft Edge later in 2016.

Documentation is now available including an API reference, a developer guide and more on the Microsoft Edge platform site.

Windows 10 Build 14291 ships with Edge Extensions support, sort of
Article Name
Windows 10 Build 14291 ships with Edge Extensions support, sort of
The Windows 10 Insider Build 14291 update brings initial extensions support to Microsoft Edge, the default system browser on machines running the operating system.
Ghacks Technology News

Tutorials & Tips

Previous Post: «
Next Post: «


  1. T J said on March 19, 2016 at 1:52 am

    Do some research about MS v Netscape !!

    You hit the nail right on the head with your comment “this was mostly due to the system integration”.

    Translate as (my comment) “MS deliberately made WIndows incompatible with Netscape”

    Everybody always seems to have it backwards, except you.

    Don’t reply, can’t be arsed arguing.

    1. Andrew said on March 19, 2016 at 2:03 am

      Uh… how is making internet explorer more integrated with windows causing Netscape to be incompatible? Last I checked netscape still ran just fine with IE4 installed. I know because I ran both browsers for a while back in the day.

      You do understand that “incompatible” means that Netscape just wouldn’t work right? When I said “mostly due to the system integration” that was in-context stating that IE had a benefit over netscape. Not sure how you translated that as “therefore Netscape wouldn’t work in windows”.

  2. Jeff said on March 18, 2016 at 6:06 pm

    Too little, too late. Nobody should care about Edge any more. Move on to Opera, Firefox, Chrome and dump the Microsoft browsers.

    1. Andrew said on March 18, 2016 at 7:01 pm

      yeah! screw any new innovation or competition! Let’s even drop Firefox and Opera, and all browsers and just have Chrome. Then we can live the great life like it was when we had only IE6!


      1. Andrew said on March 19, 2016 at 1:32 am

        How exactly did Microsoft make Windows incompatible with Netscape? I think you have it kind of backwards on the reason. Netscape failed because:

        1. Microsoft utilized Windows to allow deeper integration with Internet Explorer (with IE4). Netscape still worked just fine, but Microsoft had the advantage there.
        2. Microsoft was able to release IE4 w/ Windows 98 during a huge PC growth period allowing people to have a default browser. This heavily benefited with Microsoft’s “monopolistic” advantage.
        3. Netscape used to cost money, IE was free.
        4. Netscape’s development was greatly brought to a crawl because they dropped Netscape 5’s code.
        5. Microsoft had windows update to help benefit the updates and such.

        Subjectively speaking, based on the features that were offered on both browsers, I believe that IE4 offered superior performance and features in comparison to Netscape. Though i’m sure this was mostly due to the system integration.

      2. T J said on March 19, 2016 at 1:16 am

        If Microsoft had not screwed and trampled its competitors, we might have the latest version of Netscape. I wonder how good that would be?
        MS deliberately made Windows incompatible with Netscape because it was far superior to anything MS had.
        Still, Netscape screwed MS for a few hundred million dollars in anti-trust compensation.

  3. vux777 said on March 18, 2016 at 5:35 pm

    Hi Martin
    is this the only thing I need to do to get into fast ring ?
    previously I wasn’t in insider program…

    I enabled it since yesterday…but so far no new updates

    1. Martin Brinkmann said on March 18, 2016 at 6:09 pm

      Yes I think it is, but it may take a while before builds become available. Check for updates regularly using Windows Update.

      1. vux777 said on March 18, 2016 at 11:56 pm

        well, now I know what I’m going to do tomorrow…
        reinstall windows… :/
        this is heavily in development

        -gesture extension is buggy… slow responses, many time context menu shows up together with gesture trail, or simply freezes so that context menu not working after
        …and why trails in the first place ?!

        and one of the most annoying things in new windows is that styled context menu (win apps)… not just in fast ring build but in stable too (like, when pasting something into search)
        very slow, especially in Edge

      2. vux777 said on March 18, 2016 at 7:12 pm

        ok tnx

        edit: ha, just checked and it started to pull 14291 :)

      3. Martin Brinkmann said on March 18, 2016 at 7:25 pm

        Great :)

Leave a Reply

Check the box to consent to your data being stored in line with the guidelines set out in our privacy policy

We love comments and welcome thoughtful and civilized discussion. Rudeness and personal attacks will not be tolerated. Please stay on-topic.
Please note that your comment may not appear immediately after you post it.