Chrome to Allow Use of Unsupported Extensions Like UBlock Origin Until June 2025

Chrome to Allow Use of Unsupported Extensions Like UBlock Origin Until June 2025

For Chrome users relying on extensions like UBlock Origin, which operates on the outdated Manifest Version 2 that is no longer actively supported, there’s a reason to feel relieved for now. Google has rolled out a temporary flag designed for developers, which permits continued usage of these extensions until the Chrome 139 release set for June 2025. This extension window offers much-needed time for users as they adapt to the changes brought about by Manifest V3.

Manifest V2 refers to the previous iteration of the Chrome Extensions architecture. Extensions built on this framework maintain a continuous background page that consumes system resources even when not in active use, and they have the capability to run remotely managed code, which presents security vulnerabilities.

Manifest V3 represents the latest update in the Chrome Extensions framework. It introduces various enhancements, including the use of Service Workers in place of persistent background pages to conserve resources, activating only when necessary. Furthermore, extensions are now required to bundle all JavaScript within their package, enhancing security. The updated Declarative Net Request API also boosts performance and privacy by superseding the older and clunkier webRequest API.

Google’s decision to phase out Manifest V2 in favor of Manifest V3 is driven by goals of improved performance, enhanced security, and greater privacy protections.

Currently, Google allows organizations to operate Manifest V2 extensions for an additional year via a policy named “ExtensionManifestV2Availability.”

Temporary Relief: Chrome Users Can Continue Using Manifest V2 Extensions

Google is now implementing a feature dubbed “Allow legacy extension manifest versions,” enabling developers to sustain their Manifest V2 extensions up until June 2025.

This feature permits users to load legacy (unsupported) manifest versions as unpacked extensions. Here’s how it is described:

“This allows the loading of extensions with legacy (unsupported) manifest versions as unpacked extensions. This feature is meant solely for the maintenance of older extensions and will be phased out in the future. – Mac, Windows, Linux, ChromeOS, Lacros.”

Feature for allowing legacy extension manifest versions. Image Credit: WindowsReport.

Users may continue utilizing their familiar Manifest V2 extensions by activating this flag manually. Nevertheless, this is merely a temporary measure. Once the policy enabling this flag is discontinued, it will cease to function, necessitating a shift to Manifest V3 extensions.

This temporary flag grants users and developers valuable time to adjust to the new extension system. Users are encouraged to proactively investigate Manifest V3 alternatives available on the Chrome Web Store.

In addition, Google is working to enhance the detection of Chrome Tablet mode on Windows while Microsoft seeks to lead users away from the Chrome Web Store. Furthermore, Chrome may introduce features aimed at decluttering the tab bar interface.

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