We now know exactly when uBlock Origin will stop working on Microsoft Edge
Microsoft has confirmed a timeline for ending support for Manifest Version 2 (MV2) extensions on Microsoft Edge, which will discontinue uBlock Origin alongside other legacy extensions. The company aims to complete the transition for consumers by the end of 2026, with users receiving initial notifications in August 2026 and MV2 extensions being gradually disabled by default in subsequent months. Enterprise users face a delayed transition, with MV2 support ending in 2027.
The shift to Manifest Version 3 (MV3) represents an industry-wide effort to modernize browser extension architecture, though the change has proven controversial among users and privacy advocates. Critics argue that MV3 provides reduced capabilities for content filtering and privacy protection compared to MV2. UBlock Origin’s developer has indicated the extension cannot be adequately maintained under MV3 constraints, making this transition particularly significant for users who rely on uBlock Origin for ad blocking and privacy.
Users currently relying on uBlock Origin on Edge should begin evaluating alternative ad-blocking solutions before the full transition takes effect.