Microsoft is advancing plans to disable support for the Manifest V2 extension framework inside its Edge web browser. The upcoming architectural transition directly mirrors an identical move undertaken by Google Chrome earlier this year, effectively standardizing add-on platform requirements across two of the market's leading Chromium-based browsers.
Because of this framework retirement, legacy extensions built specifically on the Manifest V2 architecture will soon cease to function for Edge users. The deprecation particularly affects software focused on privacy and content filtering, including popular ad blockers such as uBlock Origin, which rely on technical capabilities that are restricted under newer browser extension guidelines.
Microsoft reports that the migration away from the legacy standard is already nearly complete across its software ecosystem. Out of the vast collection available in the official Edge Add-On Store, the company noted that there are currently only 58 extensions maintaining any meaningful usage that still rely on the Manifest V2 platform.
What it means
This phase-out represents a major structural shift in how web browser extensions operate across the desktop web. As Microsoft follows Chrome in locking out Manifest V2 extensions, users who rely on traditional ad-blocking tools like uBlock Origin to manage their browsing experience will soon be forced to adapt. Moving forward, those affected will need to switch to updated ad-blocking software compatible with newer browser guidelines or consider alternative web browsers that choose to maintain support for legacy extension frameworks.