Google Chrome 150 disables legacy ad blockers

// 5d agoPRODUCT UPDATE

Google Chrome 150 disables legacy ad blockers

Google is finalizing its transition to the Manifest V3 extension framework by removing the kExtensionManifestV2Disabled policy flag in Chrome 150, expected in late June 2026. This change eliminates the last remaining workaround for legacy extensions, rendering classic ad blockers like uBlock Origin entirely non-functional.

// ANALYSIS

Google's ultimate termination of Manifest V2 represents a strategic consolidation of browser control under the banner of security, permanently altering the web extension landscape.

–The deletion of the legacy flag shuts down the final loophole that allowed enterprise environments and power users to delay the transition.
–Replacing the flexible webRequest API with the declarative model strips ad blockers of their real-time adaptability, shifting the advantage back to ad networks and trackers.
–The update could trigger user migration to alternative browsers like Firefox, which continues to support older extension paradigms.

// TAGS

chromead-blockermanifest-v3browser-extensionsdeprecationgoogle

DISCOVERED

5d ago

2026-06-16

PUBLISHED

5d ago

2026-06-16

RELEVANCE

8/ 10

AUTHOR

arnejenssen

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