Microsoft Edge to Discontinue Support for Manifest V2 Extensions, Affecting Ad Blockers

Microsoft Edge announced that it will discontinue support for the Manifest V2 (MV2) extensions platform, a move that will effectively disable popular ad‑blocking tools such as uBlock Origin that rely on the older framework. The decision mirrors Google Chrome’s earlier phase‑out of MV2 and follows Microsoft’s assessment that only 58 extensions in the Edge Add‑On Store still have “meaningful usage” under MV2, with just three lacking equivalents on the newer Manifest V3 (MV3) platform.

Users affected by the change are advised to transition to alternatives that already operate on MV3, such as uBlock Origin Lite, or to adopt browsers that continue to accommodate MV2 extensions, including Opera, which has pledged ongoing support “for as long as it’s technically feasible.” The shift underscores a broader industry trend toward the more secure and performance‑oriented MV3 standard, prompting developers and users alike to update or replace legacy extensions.