Chrome Just Killed the Last uBlock Origin Workaround. Here's What to Use Instead

Chrome has effectively ended every practical way to keep uBlock Origin running. As of June 2, Chrome users are one update away from losing the last workaround keeping uBlock Origin alive.

Google's next scheduled browser update, Chrome 150, is expected on June 30, 2026, and it will remove the primary command-line workaround that tech-savvy users have quietly relied on since the standard settings toggle disappeared last July.^[1] 

This matters to a lot of people. According to an All About Cookies survey, 71% of people use ad blockers to see fewer ads. But importantly, 59% use ad blockers to stop malware, and 54% to protect their online privacy.

uBlock Origin has been one of the most widely installed free ad blockers for Chrome, and its developer has confirmed that a fully compatible replacement isn't coming.

Here's what's actually happening, why there's no fix in the works, and what to do if you want to stay protected on Chrome. 

How Chrome killed uBlock Origin and why every workaround is now dead

The story starts with Manifest V3, the set of rules Google introduced to govern how Chrome extensions work. Google framed the switch as a security and performance improvement. The practical consequence for uBlock Origin was immediate and severe.

The original extension relied on Chrome's (webRequest) API, which let it intercept network requests in real time and apply millions of custom filter rules. Manifest V3's replacement API caps the number of rules an extension can use and removes real-time dynamic filtering entirely. uBlock Origin's entire filtering model depends on that capability. It can't be rebuilt to work within Chrome's new rules without gutting what makes it effective at blocking ads, cookies, and trackers.

Raymond Hill, the developer behind uBlock Origin (uBO), is direct about this on the official uBlock GitHub wiki: "There is no Manifest v3 version of uBO." Part of what made the original so powerful was that it's open source — anyone could contribute to or customize its filter lists, building a community-maintained blocking engine that updated constantly and blocked virtually anything. The MV3-compatible replacement, uBlock Origin Lite, is a deliberately scaled-back version that loses that flexibility and allows some tracking by design. Hill says the choice of whether to accept it "is up to you."

And Chrome isn't the only browser affected. Every major Chromium-based browser — Microsoft Edge, Opera, and others — is built on top of Google's open-source Chromium project. Google controls that codebase.

Once Google removes MV2 support from Chromium entirely, no browser built on it can keep MV2 extensions working without independently forking the entire project. Forking is a task so costly and complex that no major browser vendor is realistically going to take on. As developers in the browser community have put it: if you want MV2, Firefox is it. That's not a preference. It's a technical restraint.

Neowin reports that Microsoft Edge and Opera will follow Chrome in removing support for Manifest V2.

Google's official position is that the MV3 switch was made for security and performance reasons, and that the impact on ad blockers is a side effect, not the intent. As PCWorld noted, the fact that it also hobbles ad blockers is "a bonus that Google is unlikely to be too upset about."

Google disabling uBlock Origin timeline

Here is what happened, in order. Each entry below is a numbered version of Chrome. Google ships a new version approximately every four weeks.

• October 2024: Google began disabling uBlock Origin in Chrome stable. A settings toggle let users temporarily re-enable it.
• March 31, 2025: Google disabled all Manifest V2 extensions by default across all channels.
• July 24, 2025 (Chrome 138): Google permanently disabled Manifest V2 for all Chrome users and removed the settings toggle. The standard re-enable option was gone.
• Chrome 139: Google removed the enterprise override policy (ExtensionManifestV2Availability), per the Chrome for Developers MV2 deprecation timeline.
• Chrome 149 (stable June 2, 2026): The last version where command-line flag workarounds reliably kept uBlock Origin running for technical users.
• Chrome 150 (expected June 30, 2026): Removes the primary technical workaround power users had kept in their toolkit (ExtensionManifestV2Disabled). A limited DevTools method persists, but it requires manually patching page elements each session and isn't practical for daily use.
• Chrome 151 (expected July 2026): Will remove the remaining flags (ExtensionManifestV2Unsupported, ExtensionManifestV2Availability, and AllowLegacyMV2Extensions). The W3C WebExtensions Community Group documented the Chrome 150 removal on May 20, 2026, citing a Chromium code review in which a Google engineer confirmed: "MV2 extensions are no longer allowed in any supported version of Chrome, and we are removing support for them." PiunikaWeb reported the Chrome 151 flag removals on June 8; PCWorld confirmed the timeline a day later.

What losing uBlock Origin actually costs you

Since October 2024, Google has removed one workaround after another, in order, from easiest to hardest. First went the settings toggle: a simple checkbox that let anyone re-enable uBlock Origin without technical knowledge. Next, the enterprise override, used by IT teams at organizations. Then the command-line flags, the last option available to users comfortable enough to open a terminal and type a command. Chrome 150 removes the final flag in that sequence.

Ad blockers do more than remove banner ads. According to an All About Cookies survey, 59% of ad blocker users rely on the software to protect against malware, and 54% use it to protect their privacy. Another 67% say they've abandoned content or left a website entirely because of unwanted ads.

Losing an effective blocker has real security consequences. Malvertising, or malicious ads designed to redirect your browser, trigger downloads, or harvest credentials, doesn't stop because your extension was disabled.

And it removes your main defense against cookie profiling: advertisers use tracking cookies to monitor your browsing across sites and build behavioral profiles used to target you. A good blocker strips those out before they load.

The official replacement, uBlock Origin Lite, runs in Chrome within Manifest V3's rules. The compromise is real: it allows some tracking, its blocklist is a fraction of what the original blocked, and it can't perform the dynamic filtering that made the original effective. That means it's intentionally designed to block fewer websites, trackers, and ads.

Our uBlock Origin Lite vs. uBlock Origin comparison breaks down exactly what you give up.

What to do before Chrome 151 lands

Your best path depends on whether you want to stay on Chrome or restore full blocking capability.

If you want to stay on Chrome:

1. Install uBlock Origin Lite as a free starting point. It works within Chrome's Manifest V3 rules, but it's a deliberately limited version. It allows more internet tracking than the original and catches fewer ads. Read our uBlock Origin Lite review before installing so you know what you're accepting.
2. Switch to a tested paid alternative. In our hands-on testing, Total Adblock scored 100/100 on AdBlock Tester, passed all three Can You Block It tests, and reliably blocked YouTube ads on Chrome, which is one of the hardest tests to pass consistently. It's the strongest MV3-compatible blocker we've found. See our full list of best ad blockers for Chrome with test scores.
3. Consider a VPN bundle for broader protection. Surfshark CleanWeb scored 96/100 on AdBlock Tester and comes paired with Surfshark VPN, which encrypts your connection and hides your IP. See our best uBlock Origin alternatives for side-by-side comparisons and pricing.

If you want full blocking capability back:

1. Switch to Firefox. Firefox fully supports Manifest V2 and is one of the best browsers for privacy. Install uBlock Origin from the Firefox Add-Ons store, and it runs exactly as it always did. Exporting your bookmarks and syncing your password manager takes around 15 minutes. Critically, Firefox is built independently of Google's Chromium project, so it isn't subject to the same roadmap.
2. Try Brave. Brave's ad blocker, Brave Shields, is built into the browser itself. It’s not installed as an extension, so Chrome's extension rules don't apply to it, and Brave Shields bypasses Manifest V3 restrictions entirely. Ads are blocked from the moment you install it, with no configuration needed.

Bottom line

Google has removed every practical way to keep uBlock Origin running on Chrome. Chrome 150 kills the last command-line flag on June 30. And because Google controls Chromium — the underlying code that Edge and Opera are also built on — those browsers are on the same path.

If you've been relying on uBlock Origin for ad blocking, tracker protection, or malware screening, you need a tested replacement. Our best uBlock Origin alternatives cover every scenario: paid options for Chrome, free options for Chrome, and browser switches that restore everything you had.