Chrome’s Last Workaround for uBlock Origin Is Almost Gone

Google is preparing to fully close the door on Manifest V2 extensions in Chrome, which means the remaining workaround for running the original uBlock Origin is almost gone. Once the change reaches stable Chrome builds, older extensions built on Manifest V2 will be blocked more completely, and popular tools that still depend on that older system will no longer work in the browser without difficult and unstable workarounds.

This change is tied to Chrome’s long running move from Manifest V2 to Manifest V3. Manifest is the rules system that controls what browser extensions can do. Google says Manifest V3 is designed to improve security, performance, and privacy by limiting how deeply extensions can interfere with browser behavior.

That explanation is technically important, but the practical result is simple for many users. The original uBlock Origin, one of the most popular and powerful ad blockers, depends on capabilities that Manifest V3 restricts. Because of that, Chrome users have already seen the extension disabled or removed in many cases. Some workarounds still existed, but those are expected to disappear by the end of June 2026.

Chrome 150 or Chrome 151 could end the remaining loophole

The final switch appears to depend on Chrome’s internal handling of a flag called ExtensionManifestV2Disabled. Reports differ on whether Chrome 150 or Chrome 151 will be the build that fully removes the remaining workaround, but the direction is clear. Once the change is locked in, users will no longer have a simple way to keep old Manifest V2 extensions running.

This does not mean all ad blockers are disappearing from Chrome. It means the most powerful Manifest V2 style blockers are losing the browser access they depended on. Developers can build Manifest V3 versions, but those versions may not have the same depth of control.

uBlock Origin Lite is one example. It is designed to work under Manifest V3, but it has fewer features than the original. For people who only want basic ad blocking, that may be enough. For users who rely on advanced filters, dynamic rules, or stronger control over scripts and trackers, the change will feel like a downgrade.

Google says this is about security, but ad blocking is clearly affected

Google’s official reasoning is that Manifest V3 makes Chrome safer and faster. That argument has some merit. Browser extensions can be dangerous when abused. Malicious or poorly designed extensions can collect data, inject code, track browsing, or interfere with pages in harmful ways.

A stricter extension system can reduce those risks. It can also make Chrome more predictable and less vulnerable to rogue add ons.

At the same time, the change directly affects ad blockers, and that makes the situation controversial. Google is one of the largest advertising companies in the world, so users are naturally skeptical when a Chrome change weakens powerful ad blocking tools. Even if Manifest V3 is not presented as an anti ad blocker move, it still creates that effect.

That is why many users see the shift as more than a technical cleanup. To them, it looks like Chrome is becoming less friendly to people who want stronger control over ads, trackers, and unwanted scripts.

Chrome users still have options, but they may need to compromise

Anyone who still depends on the original uBlock Origin has a few choices. The easiest is to move to a Manifest V3 compatible blocker such as uBlock Origin Lite. That keeps Chrome compatibility but gives up some advanced behavior.

Another option is switching to a browser that continues to support stronger ad blocking tools. Some Chromium based browsers may offer their own extension handling, while non Chromium browsers may remain more flexible. The long term reliability of each option will depend on how those browsers handle Manifest V2 support and security updates.

A third option is using Chrome’s developer settings and manual changes, but that is not practical for most people. It can reduce browser stability and may break again with future updates. For everyday users, it is not a good long term plan.

The end of Manifest V2 changes how Chrome users control the web

The removal of Manifest V2 marks a major change in Chrome’s extension ecosystem. It may improve some areas of security and performance, but it also limits the tools many people use to shape their browsing experience.

For years, uBlock Origin has been more than a simple ad blocker. It has been a privacy tool, a performance tool, and a way for users to protect themselves from intrusive pages. Losing the original version in Chrome will push many people toward weaker substitutes or different browsers.

The timing also matters. Web advertising has become more aggressive, and many users already feel overwhelmed by pop ups, autoplay video, trackers, consent banners, and sponsored clutter. Removing the most capable blocking tools from the world’s most popular browser will not be welcomed by those users.

By the end of June 2026, the old workaround is expected to disappear. Chrome users who still rely on the original uBlock Origin should prepare now. The choice is becoming clear: accept a Manifest V3 blocker with fewer capabilities, switch browsers, or give up the level of control that made uBlock Origin so popular in the first place.