Microsoft Edge is moving to discontinue support for Manifest V2 extensions, mirroring Google Chrome’s earlier transition to Manifest V3. The change will affect multiple ad blockers, including the widely-used uBlock Origin tool, though limited alternatives remain available to users.
According to Microsoft, the Edge Add-On Store currently hosts only 58 extensions with significant user adoption that rely on the MV2 framework. Of those, three lack MV3 alternatives, leaving users of those particular tools with limited options for maintaining functionality.
Users affected by the change have several pathways available. They may switch to alternative ad blockers that operate on the MV3 platform, such as uBlock Origin Lite. Some users may prefer to migrate to browsers that continue supporting MV2 extensions, including Opera, which has indicated its commitment to maintaining MV2 compatibility “for as long as it’s technically reasonable,” or Firefox, which similarly continues support for these extensions.
The rollout will proceed in phases. Beginning this month, Microsoft will gradually disable remaining MV2 extensions by default, with advance user notifications and recommendations for MV3 alternatives where available. The initial deployment will affect Canary, Dev, and Beta channels before expanding to the Stable version. Microsoft aims to complete the consumer transition by year-end, with enterprise user transitions scheduled for early 2027. Managed enterprise devices will not be affected during the consumer phase of the transition.
This change represents part of a broader industry shift away from the older extension framework, with major browser developers moving toward MV3 as the standard platform for extensions.
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