Chrome Web Store removes all remaining Manifest V2 extensions, including uBlock Origin

Sources: primary, report, discussion
Summary: Google's Manifest V2 support timeline records the 2026-08-31 milestone as removal of all remaining Manifest V2 extensions from the Chrome Web Store, ending a deprecation Google began in January 2022 when the store stopped accepting new public MV2 submissions. Per that page, MV2 extensions installed on Chrome 138 or earlier stay installed but cannot receive updates and cannot be reinstalled from the store once removed. The secondary report records Brave hosting four MV2 extensions on its own backend: AdGuard, uBlock Origin, uMatrix, and NoScript.
Why it matters: The Chrome Web Store is the dominant extension marketplace for Chromium-based browsers, so users of other Chromium browsers can no longer discover or install these extensions there even where the browser still supports MV2.
Follow-up: Track whether other Chromium browsers publish MV2 distribution paths of their own.