Manifest V3 changes are now available for testing in Microsoft Edge

Microsoft plans to support the Declarative Net Request API and other changes proposed as part of Manifest V3 by Google. The Manifest V3 document clarifies API and feature changes in the Chromuim project that also bring a number of restrictions for extensions. The most affected extensions are ad blockers, that may stop working properly.

Edge 79 Stable Wallpaper

Microsoft is positive about the changes. The official announcement says.

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If you are an extension developer, you may already be aware that the background service worker change and the introduction of the Declarative Net Request API would require you to update your extension. Please refer to the Migrating to Manifest V3 document for exact changes required to port your extensions from Manifest V2.

We believe that these changes will not compromise the capabilities of your extension or reduce the potential that the extension ecosystem has. These changes should reduce the time taken to review each submission, and improve certification turnaround time, thus reducing the overall cost of developing and maintaining extensions.

We recognize the value of content blocking extensions and appreciate the role they play in honoring user’s choice by blocking advertisements and enhancing privacy by blocking cookies and we want developers to continue to offer these capabilities.

After an extensive review of the concerns raised by content blockers and the community, we believe that a majority of those concerns have been resolved or will be resolved before Web Request API is deprecated. If you continue to face issues, we encourage you to share your feedback, where our team can engage to understand and address your feedback.

The current declarative net request API implementation is already available in the Stable and Beta channels of Edge. Developers can test these changes, and provide feedback.

Channel nameDescription
Microsoft Edge 84 StableDNR API is available for testing
Microsoft Edge 85 BetaHeader modification support is available

Actual Edge versions as of today


Download Microsoft Edge

You can download pre-release Edge version for Insiders from here:

Download Microsoft Edge Insider Preview

The stable version of the browser is available on the following page:

Download Microsoft Edge Stable


Note: Microsoft has started delivering Microsoft Edge to users of Windows via Windows Update. The update is provisioned for users of Windows 10 version 1803 and above, and replaces the classic Edge app once installed. The browser, when delivered with KB4559309, makes it impossible to uninstall it from Settings. Check out the following workaround: Uninstall Microsoft Edge If Uninstall Button is Grayed Out

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