Microsoft Edge更新将与Windows Update绑定，从候选发布开始，它将不再允许您使用旧版本或旧(Legacy)版本的Edge。任何尝试都会启动Chromium版本的Edge。但是，您可以启用并行体验设置，允许您在Windows 10上同时运行(Windows 10)旧版(Legacy)和Chromium版本的Microsoft Edge。
新版本的Microsoft Edge将用新版本替换所有现有快捷方式、固定图标和任何引用。另外，让我澄清一件事。如果您一直在使用Microsoft Edge Chromium，则它是最新版本。旧版本是 NON-CHROMIUM 版本(legacy version is the NON-CHROMIUM version)。候选版本将于2020 年1 月 15 日(January 15th)正式发布。我们中的一些人可能已经使用Edge beta 很长时间了，而这个新版本听起来可能有所不同，但事实并非如此。
(Run Legacy Edge)并排运行 Legacy Edge和Chromium Edge
当Chromium版本的Edge安装在Windows中时，它会自动隐藏旧版本。(HIDE the Legacy version automatically.)它在那里，但如果您安装稳定版本，它将不可见。但是，如果您想同时使用这两个版本，则需要启用组策略或更改计算机上的注册表设置。一些在他们的产品中使用旧版本的企业，为了确保一切都像以前一样工作，这是一个重要的功能。
1]使用注册表编辑(Registry Editing)启用并排体验
打开注册表编辑器
导航到 Microsoft 策略
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft
右键单击(Right-click)Microsoft文件(Microsoft)夹，然后创建一个名为EdgeUpdate的新密钥(EdgeUpdate)
选择EdgeUpdate文件夹，在左侧空白处右击
创建一个名为Allowsxs的新 32 位DWORD
双击编辑Allowsxs的值并将其设置为 1。
2]使用组策略(Group Policy)启用并排体验
- 通过在运行(Run)提示中键入gpedit.msc然后按Enter 键(Enter Key)来打开 组策略编辑器。
- 在组策略编辑器(Group Policy Editor)中，导航到Computer Configuration > Administrative Templates > Microsoft Edge Update > Applications.
- 在应用程序下，选择允许 Microsoft Edge 并排浏览器体验(Allow Microsoft Edge Side by Side browser experience)，然后单击编辑(Edit)策略设置。
- 选择启用，然后单击确定。
注意：(Note:)虽然Microsoft Docs明确表示有此策略，但我还没有找到它。
除此之外，微软(Microsoft)还谈到了一个注册表(Registry)项，它也是不可见的。我猜它稍后会可用。这与GP政策有关。
在系统完全更新并安装下一版本Microsoft Edge的稳定通道后，设置以下注册表项和值：
钥匙：
SOFTWARE\Microsoft\EdgeUpdate\ClientState\{56EB18F8-B008-4CBD-B6D2-8C97FE7E9062}
键值：BrowserReplacement
每次更新Microsoft Edge 稳定版(Microsoft Edge Stable)频道时都会覆盖此密钥。作为最佳实践，我们建议您不要删除此密钥以允许用户访问Microsoft Edge的两个版本。
遵循这些方法中的任何一种后，如果您安装Microsoft Edge Chromium，旧Edge将被重命名为Microsoft Edge legacy。但是，来自任务栏(Taskbar)、固定磁贴等的实例将被删除。
何时启用 Edge Legacy Support？
在Microsoft(Microsoft)开始推出Chromium版本的Edge之前，您需要启用并排浏览器体验。如果您是 IT 管理员，请确保将设置部署到所有用户。
您还可以选择延迟Windows更新，这反过来会延迟在Windows 10上安装(Windows 10)Edge Stable Chromium版本。Windows允许您暂停更新，这将为您提供足够的时间来更改组策略设置，如果您还没有尝试过，还可以测试新版本的Edge 。
最好的办法是安装Beta版并体验它。它带有最少数量的错误，目前与发布候选版本匹配。
安装Edge Chromium Stable后启用Edge Legacy模式(Edge Legacy)
如果你已经安装了它，那么很多事情已经发生了。这是缺点列表。
- 您必须将Legacy Edge(Legacy Edge)重新固定到“开始(Start)”或“任务栏(Taskbar)”和“开始菜单(Start Menu)”，因为新的 Edge 会覆盖它们。
- 固定到“开始(Start)”或Microsoft Edge 旧版(Microsoft Edge Legacy)任务栏(Taskbar)的站点将转换为新版本的Microsoft Edge。因此，您将不得不再次重新创建它们。
让我们弄清楚如何解决这种情况：
- 转到Settings > Apps和Features > Select然后卸载 Microsoft Edge Chromium (Stable)(Uninstall Microsoft Edge Chromium (Stable))
- 卸载后，将出现旧版 Edge 浏览器(Legacy Edge Browser)。
- 创建注册表(Registry Key)项或更新我上面提到的组策略（ (Group)Allowsxs）
- 下载并安装 Microsoft Edge 稳定版(Microsoft Edge Stable) (Microsoft Edge Stable )
- 返回“开始(Start)”菜单，您应该会看到它们。
如上图所示，我安装了所有版本的Edge ( Chromium ) 和Edge Legacy。在“开始(Start)”菜单中，名称的区别很明显，在应用程序列表中，它称为Microsoft Edge（Microsoft Corporation）并具有旧图标。
我希望如果您需要，您可以清楚地同时运行Edge legacy 和Chromium Edge 。
How to run Legacy Edge and Chromium Edge side by side in Windows 10
Microsoft Edge updates will be tied with Windows Update, starting with the release candidate, It will not allow you to use the older version or Legacy version of Edge anymore. Any attempt will launch the Chromium version of Edge. However, you can enable side-by-side experience setting that will allow you to run both Legacy and the Chromium versions of Microsoft Edge on Windows 10.
The new version of Microsoft Edge will replace all existing shortcuts, pinned icons, and any reference with the new one. Also, let me clear one thing. If you been using Microsoft Edge Chromium, it is the latest version. The legacy version is the NON-CHROMIUM version. The release candidate will become officially available from January 15th, 2020. Some of us might be using Edge beta for so long, and this new version might sound different except that it is not.
Run Legacy Edge & Chromium Edge side by side
When the Chromium version of Edge gets installed in Windows, it will HIDE the Legacy version automatically. It is there, but if you install the stable version, it will not be visible. However, if you want to use both of the versions side-by-side, you need to enable a group policy or change registry settings on the computer. Some of the businesses who were using the older version for their products, then to make sure everything works as before, it is an important feature.
1] Enable Side-by-side experience using Registry Editing
Open Registry Editor
Navigate to Microsoft Polices
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft
Right-click on the Microsoft folder, and create a new key with name EdgeUpdate
Select EdgeUpdate folder, and right-click on the empty side on the left-side
Create a new 32-bit DWORD with the name Allowsxs
Double click to edit the value of Allowsxs and set it as 1.
2] Enable Side-by-side experience using Group Policy
- Open the Group Policy Editor by typing gpedit.msc in the Run prompt followed by pressing the Enter Key.
- In Group Policy Editor, navigate to Computer Configuration > Administrative Templates > Microsoft Edge Update > Applications.
- Under Applications, select Allow Microsoft Edge Side by Side browser experience and then click Edit policy setting.
- Select Enabled and then click OK.
Note: While Microsoft Docs clearly says this policy is there, I wasn’t able to find it yet.
Apart from this, Microsoft has also talked about a Registry entry, which is also not visible. I am guessing that it will be available later. It has something to do with the GP policy.
After the systems are fully updated and the Stable channel of the next version of Microsoft Edge is installed, the following registry key and value is set:
Key:
SOFTWARE\Microsoft\EdgeUpdate\ClientState\{56EB18F8-B008-4CBD-B6D2-8C97FE7E9062}
Key value: BrowserReplacement
This key is overwritten every time the Microsoft Edge Stable channel is updated. As a best practice, we recommend that you don’t delete this key to allow users to access both versions of Microsoft Edge.
After following any of these methods, if you install Microsoft Edge Chromium, the old Edge will be renamed as Microsoft Edge legacy. However, the instances from Taskbar, Pinned tiles, etc. will be removed.
When enable Edge Legacy Support?
You need to enable the side by side browser experience before Microsoft starts rolling out the Chromium version of Edge. If you are an IT admin, make sure to deploy the settings to all the users.
You can also choose to delay the Windows updates, which in turn will delay the installation of the Edge Stable Chromium version on Windows 10. Windows allows you to pause updates which will give you enough time to change the group policy settings, and also test the new version of Edge if you haven’t tried it yet.
The best would be to install the Beta version and experience it. It comes with the least number of bugs, as of now matches with the release candidate version.
Enable Edge Legacy mode after installing Edge Chromium Stable
If you have already installed it, then a lot of things have already happened. Here is the list of drawbacks.
- You will have to re-pin the Legacy Edge to Start or Taskbar and Start Menu as the new one will overwrite them.
- Sites that were pinned to Start or the Taskbar for Microsoft Edge Legacy will convert to the new version of Microsoft Edge. So you will have to recreate them again.
Let us figure out how to fix this situation:
- Go to Settings > Apps & Features > Select and then Uninstall Microsoft Edge Chromium (Stable)
- As soon as you uninstall, the Legacy Edge Browser will appear.
- Create the Registry Key or update the Group policy which I have mentioned above (Allowsxs)
- Download and install Microsoft Edge Stable
- Go back to the Start menu, and you should see both of them.
As you can see in the above image, I have all versions of Edge (Chromium) and Edge Legacy installed. While in the Start menu, the difference is evident with the name, in the applications list, its called Microsoft Edge (Microsoft Corporation) and has the old icon.
I hope it was clear how you can run both Edge legacy and Chromium Edge side by side if you need to do so.
