Why Chrome Extensions Stop Working

Chrome extensions can break for a variety of reasons — a Chrome update that changes browser APIs, a conflict with another extension, a corrupted installation, or the extension simply no longer being maintained. The good news is that most problems have straightforward fixes you can try yourself.

Step 1: Reload the Extension

Before anything else, try the simplest fix: reload the extension.

  1. Go to chrome://extensions in the address bar.
  2. Find the extension that isn't working.
  3. Toggle it off, wait a few seconds, then toggle it back on.
  4. Reload the page you were using and test again.

Step 2: Reload the Page

Some extensions only activate when a page fully loads. If you installed or updated an extension while a tab was already open, the extension may not be active on that tab. Press Ctrl+R (Windows/Linux) or Cmd+R (Mac) to reload the page.

Step 3: Check for Extension Errors

Chrome shows error details for malfunctioning extensions:

  1. Go to chrome://extensions.
  2. Look for an "Errors" button on the extension's card. If visible, click it.
  3. Read the error log — it often points to a specific script failure or permission issue that can guide your next step.

Step 4: Update the Extension

An outdated extension may be incompatible with your current version of Chrome. To force an update:

  1. Go to chrome://extensions.
  2. Enable Developer mode using the toggle in the top-right corner.
  3. Click the "Update" button that appears.
  4. Chrome will check for and install updates for all installed extensions.

Step 5: Check Extension Permissions

Chrome occasionally changes how permissions are handled. An extension might be blocked from running on a site if its permissions were revoked or restricted.

  • Right-click the extension icon in the toolbar.
  • Select "This can read and change site data".
  • Make sure it's set to run on all sites or the specific site where it isn't working.

Step 6: Remove and Reinstall the Extension

If reloading and updating don't help, a corrupted installation may be the issue. Removing and reinstalling gives the extension a clean start:

  1. Go to chrome://extensions and click "Remove" on the problem extension.
  2. Restart Chrome.
  3. Reinstall the extension from the Chrome Web Store.

Step 7: Check for Conflicts with Other Extensions

Two extensions can clash when they both try to modify the same part of a webpage. To test for conflicts:

  1. Disable all extensions except the one you're testing.
  2. Check if it works correctly.
  3. Re-enable other extensions one at a time, testing after each until the conflict reappears.
  4. Once identified, decide which of the two conflicting extensions to keep, or look for alternatives.

Step 8: Test in a Fresh Chrome Profile

If problems persist across multiple extensions, your Chrome profile itself may be the issue. Create a new profile to test:

  1. Click your profile picture in the top-right corner of Chrome.
  2. Select "Add" to create a new profile.
  3. Install the extension there and test it. If it works, the issue is profile-specific.

When the Extension Is Discontinued

Sometimes an extension stops working because the developer abandoned it. Signs include: no recent updates, being removed from the Chrome Web Store, or persistent errors that never get fixed. In this case, search for an actively maintained alternative that offers similar functionality.