Is uBlock Origin dangerous or was it removed for violating Chrome policies?

No. uBlock Origin is not dangerous and was not removed for policy violations. Classic uBlock Origin stopped working because it uses Manifest V2 APIs that Chrome has deprecated. This is a platform change, not a quality or safety issue.

Can I re-enable classic uBlock Origin in Chrome?

No. Chrome 138 has fully disabled Manifest V2 support. There is no user setting to re-enable it. Enterprise policies may allow MV2 on managed devices, but this is not available to individual users.

What is the recommended path for uBlock Origin users?

uBlock Origin Lite is developed by the same trusted developer (Raymond Hill) and is available in the official Chrome Web Store. Other MV3 ad blockers like AdGuard or AdBlock are also available options from established developers.

Is uBlock Origin Lite an official replacement from the same developer?

Yes. uBlock Origin Lite is developed by Raymond Hill, the same developer who created classic uBlock Origin. It is the MV3-compatible version.

Is it safe to install old CRX copies of classic uBlock Origin?

No. Installing CRX files from unofficial sources is risky. These files may contain modified code, security vulnerabilities, or malware. Only install uBlock Origin Lite from the official Chrome Web Store.

Will my uBlock Origin settings transfer to uBlock Origin Lite?

Filter list selections can be re-enabled manually in uBlock Origin Lite. Some custom filter rules may need adjustment due to MV3 API limitations. The core filter lists work the same.

Extension Fixes

uBlock Origin No Longer Supported in Chrome: What Changed?

Quick Answer

Classic uBlock Origin stopped working in Chrome 138 because it uses Manifest V2. The MV3-compatible version developed by the same author is uBlock Origin Lite, available in the Chrome Web Store. While not a complete one-to-one replacement due to MV3 limitations, uBlock Origin Lite provides strong ad blocking for most users who rely on filter lists.

View uBlock Origin Alternatives Compare Lite vs Classic

uBlock Origin Options for Chrome Users

Option	Chrome 138 Compatible	Features	Best For
uBlock Origin Lite	Yes	Static filter lists, limited dynamic rules	Most Chrome users
Other MV3 ad blockers	Yes	Varies by extension	Users seeking alternatives
Firefox + classic uBlock Origin	Yes (in Firefox)	Full feature set	Users needing MV2 features
Browser built-in blocking	Yes	Basic blocking only	Minimal needs

Why Classic uBlock Origin Is Affected

Classic uBlock Origin was built on Manifest V2. Chrome 138 disabled all Manifest V2 extensions by default. This is not a removal for policy violations or a security issue. The extension simply cannot run in current Chrome versions without MV3 support.

What Is uBlock Origin Lite

uBlock Origin Lite is the Manifest V3-compatible version developed by Raymond Hill, the same developer as classic uBlock Origin. It is available in the Chrome Web Store and provides core ad blocking functionality with MV3 compatibility.

Important: Not a Complete One-to-One Replacement

uBlock Origin Lite has some differences from classic uBlock Origin due to Manifest V3 limitations. Static filter lists (EasyList, EasyPrivacy, etc.) work the same, but dynamic filtering rules have restrictions. Review the differences before switching.

Options for Chrome Users

Install uBlock Origin Lite from the Chrome Web Store
Try other MV3-compatible ad blockers (AdGuard, AdBlock)
Use browser-native ad blocking in Chrome settings
Use Firefox with classic uBlock Origin if MV2 features are needed

What Not to Do

Do not install random CRX files from unknown download sites.
Do not assume a similar name means it is official.
Do not grant broad permissions without checking the developer.
Export settings before removing old extensions if you still need the configuration.

Best Options at a Glance

Best Chrome path:uBlock Origin Lite (MV3 version by the same author)

Best full features:Firefox with classic uBlock Origin

Other MV3 options:AdGuard, AdBlock (Chrome Web Store)

Frequently Asked Questions

Sources

uBlock Origin Lite Chrome Web Store Listing
Chrome Web Store·chromewebstore.google.com
uBlock Origin Wiki: About Chrome Extension Deprecation
gorhill (uBlock Origin Developer)·github.com
Chrome Manifest V2 Deprecation Timeline
Google Chrome Developers·developer.chrome.com

uBlock Origin Lite vs Classic uBlock Origin Alternatives Detail This Extension No Longer Supported

Last updated: May 2026

uBlock Origin Options for Chrome Users

Why Classic uBlock Origin Is Affected

What Is uBlock Origin Lite

Important: Not a Complete One-to-One Replacement

Options for Chrome Users

What Not to Do

Best Options at a Glance

Frequently Asked Questions

Frequently Asked Questions

Sources

Related Pages