uBlock Origin remains supported on Firefox as Microsoft drops extension support

Recently, Microsoft announced that its Edge browser would drop support for Manifest V2 extensions, raising concerns among users. In contrast, Firefox has confirmed that uBlock Origin, a widely used ad-blocking extension, will continue to work on its platform. This decision reflects Firefox's commitment to maintaining a user-friendly environment for extensions, ensuring that users can rely on uBlock Origin without disruption.

uBlock Origin remains supported on Firefox as Microsoft drops extension support
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Published Aug 11, 2026

Topic overview

Briefly

  • Microsoft has announced that its Edge browser will no longer support Manifest V2 extensions.
  • Firefox has confirmed that uBlock Origin will continue to function on its browser.
  • This situation highlights the differing approaches of Microsoft and Firefox regarding browser extension support.

What happened

In recent developments, Microsoft announced that its Edge browser will no longer support Manifest V2 extensions, a significant change that affects many users and developers. This decision has raised concerns among users who rely on various extensions for enhanced browsing experiences. However, in contrast to Microsoft's move, Firefox has reassured its users that support for uBlock Origin, a popular ad-blocking extension, will not be affected. This announcement comes as part of Firefox's commitment to maintaining a robust ecosystem for extensions, ensuring that users can continue to enjoy the benefits of uBlock Origin without interruption. The decision by Microsoft to drop support for Manifest V2 extensions has sparked discussions about the future of browser extensions and the implications for user choice and privacy. As users navigate these changes, the contrasting approaches of Microsoft and Firefox highlight the ongoing competition in the browser market and the importance of user-centric policies. Firefox's stance on uBlock Origin reflects its dedication to providing a flexible and user-friendly browsing experience, which may attract users who are concerned about the direction Microsoft is taking with its Edge browser. Overall, the situation underscores the evolving landscape of web browsers and the critical role that extensions play in shaping user experiences online.

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Updated Aug 11, 2026

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