Microsoft Edge is about to lock out older ad blockers, just like Chrome did

Microsoft Edge is initiating a transition to phase out older browser extensions that utilize the Manifest Version 2 (MV2) framework. This move effectively places various ad blockers at risk of losing functionality. According to reports from Windows Report and the Windows Blog, the browser is moving the extensions ecosystem forward by transitioning to Manifest Version 3 (MV3). The timeline for this transition is active now, with PiunikaWeb noting that the process of dropping MV2 extensions is expected to be completed by the end of 2026. This systemic change means that extensions not updated to the newer standard may simply stop working for users. Multiple technology outlets are highlighting the implications of this shift, with The Verge and Digital Trends emphasizing that users may soon find their favorite Edge extensions are no longer operational.

Neowin specifically identifies uBlock Origin and similar add-ons as being targeted by this transition. Coverage from techedt.com further clarifies that this phase-out is a direct risk to older ad blockers. The reporting across these sources portrays the shift as a broad movement within the browser ecosystem to standardize extension manifests, though the primary impact felt by the end-user is the potential loss of specific ad-blocking capabilities. This development follows a precedent previously set by Google Chrome. Coverage from The Verge, Digital Trends, and PiunikaWeb all explicitly state that Microsoft is following Chrome's lead in this matter. The context of this shift involves the industry-wide transition from Manifest V2 to Manifest Version 3.

While the Windows Blog frames this as moving the ecosystem forward, other reports focus on the resulting lockout of older tools. This matters now because many users rely on MV2-based extensions for privacy and content filtering, and the transition period is currently underway throughout 2026. Future developments will center on whether the affected extensions are updated to Manifest Version 3 to maintain their availability on the Edge browser. Based on the provided coverage, the critical date to monitor is the end of 2026, by which time MV2 extensions are expected to be fully dropped. Users will need to determine if their specific add-ons have transitioned to the new framework or if they will be permanently disabled. The industry will be watching to see if other Chromium-based browsers follow this specific trajectory or if alternative solutions for ad blocking emerge within the MV3 constraints.