Fix Unsupported Chrome Extensions
Find safe MV3 alternatives for Chrome extensions that are disabled, unsupported, removed, or no longer maintained.
Last updated: May 2026
Quick Answer
Extension Fixes helps you find practical next steps when Chrome extensions stop working. Browse alternatives by extension name, match your exact warning message, or search for a specific extension — all without creating an account.
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What do you need to fix?
Choose the scenario that matches your situation.
Search an extension
Find current Chrome status, alternatives, and related fix guides.
Search extensionsBrowse alternatives
Compare MV3-compatible and maintained alternatives.
Browse alternativesFix Chrome warnings
Understand common warnings and what to do next.
Look up warningsUnderstand MV2 shutdown
Learn why older extensions stopped working in Chrome.
Read MV2 guidePopular Extension Alternatives
Find MV3-compatible replacements for commonly affected Chrome extensions.
Proxy SwitchyOmega
Proxy Manager
Proxy SwitchyOmega stopped working in Chrome because Chrome 138 fully disabled Manifest V2 extensions. The closest migration path is ZeroOmega, a community fork designed for Manifest V3. FoxyProxy is another established option with advanced proxy management features. Both are available on the Chrome Web Store.
uBlock Origin
Content Blocker
Classic uBlock Origin stopped working in Chrome 138+ because Chrome disabled Manifest V2 extensions. For many Chrome users, uBlock Origin Lite is the closest MV3-compatible option from the same developer, but it does not replicate every feature of the original extension. Firefox remains a practical option for users who need full classic uBlock Origin functionality, since Firefox still supports MV2 extensions. Avoid installing random CRX copies of classic uBlock Origin from unofficial sources, because modified extensions can create privacy and security risks. The MV3-compatible ad blocker space is actively developed, and other options like AdGuard AdBlocker and Adblock Plus are available in the Chrome Web Store.
Great Suspender
Tab Management
The original Great Suspender was removed from the Chrome Web Store after a malicious version incident in 2021, and Chrome proactively disabled it for installed users. Users should avoid reinstalling old CRX copies from mirror sites because modified versions can contain unwanted code. For most Chrome users, Chrome Memory Saver is the simplest built-in replacement for tab suspension. Auto Tab Discard is a practical extension alternative for automatic tab unloading, while OneTab is better for manual tab consolidation and Workona is more focused on workspace management. The best option depends on whether you want automatic suspension, simple memory savings, or session organization.
ModHeader
Developer Tool
ModHeader continues to work as an MV3-compatible extension for Chrome. It allows developers to modify HTTP request and response headers for testing and development. Alternatives like Requestly offer additional API testing features, while Header Editor provides similar header modification capabilities.
DownThemAll!
Download Manager
DownThemAll remains available and actively maintained for Chrome as an MV3-compatible extension. It provides batch downloading and download management features. For simpler needs, Chrome native downloads or alternatives like Chrono Download Manager offer different workflows.
Start with the Chrome message you see
Select the error message or warning you received to find solutions.
"This extension is no longer supported"
What to do when Chrome shows your extension is no longer supported.
Read guide"This extension may soon no longer be supported"
Prepare for upcoming changes and find alternatives before they stop working.
Read guide"Manifest V2 disabled"
Understand why Chrome disabled older extension formats and what it means for you.
Read guideWhy Chrome Disabled Old Extensions
Many older Chrome extensions were built for Manifest V2. Current Chrome versions now rely on Manifest V3 for supported extension workflows, so some older extensions may stop working unless the developer ships a compatible version.
Better Security
MV3 limits extension capabilities to reduce attack surfaces and prevent misuse.
Improved Privacy
Users have more control over permissions and what data extensions can access.
Better Performance
MV3 extensions use fewer system resources and have less impact on browser speed.
Learn more: Manifest V2 Disabled in Chrome: What You Can Do
Compare Extension Options
Head-to-head comparisons to help you choose the right extension for your workflow.
uBlock Origin vs uBlock Origin Lite
Compare the classic uBlock Origin with its MV3-compatible Lite version.
Read comparisonTampermonkey vs Violentmonkey
Compare the two most popular userscript managers for Chrome MV3.
Read comparisonChrome Userscript Manager Alternatives
Learn about the best options for managing custom browser scripts in Chrome.
Read guideHow Extension Fixes Works
Search the extension or error message
Enter the extension name, error message, or Chrome Web Store URL in the search box.
Read what changed and what to avoid
Learn why the extension stopped working and what safe steps you can take next.
Choose a maintained replacement or migration path
Select from verified alternatives and follow migration guides to continue your workflow.
Common Fix Guides
Understand and resolve common Chrome extension issues.
Fix "This Extension Is No Longer Supported"
What to do when Chrome shows your extension is no longer supported.
Fix "This Extension Was Turned Off"
Learn why Chrome turned off an extension and what to do next.
Manifest V2 Disabled
Understand Chrome MV2 deprecation and what it means for your extensions.
Chrome Disabled My Extension
Common reasons Chrome disables extensions and safe ways to resolve issues.
FoxyProxy Alternatives
Compare FoxyProxy, ZeroOmega, and other proxy switching options.
The Great Suspender History
Learn what happened and find safer tab management alternatives.
Frequently Asked Questions
Last updated: May 2026