Why Chrome blocks extensions and how to turn them back on

Chrome disables extensions for two reasons: either the extension stopped being updated by its developer and Chrome considers it unsupported, or you manually disabled it yourself. If Chrome has blocked it automatically, you'll see a message in the extension's details page saying it's "no longer supported" or "not verified". You can re-enable an unsupported extension, but Chrome may disable it again when you restart the browser, depending on which type of block is in place.

The steps to re-enable differ slightly depending on whether you're turning back on something you disabled yourself or overriding Chrome's automatic block. Both take less than a minute, and you don't need to reinstall anything.

Key Takeaways

  • Open Chrome's extension management page by typing chrome://extensions into the address bar, then toggle the extension back on.
  • If Chrome automatically disabled the extension, re-enabling it may only last until you close and reopen the browser, depending on how old the extension is.
  • Extensions blocked by Chrome's security system cannot be permanently re-enabled without developer updates, but you can turn them back on each session if you need them.
  • Check the extension's details page to see whether it was disabled by you or by Chrome, since the reason affects whether the change will stick.

Opening the extension management page

Go to the address bar at the top of Chrome and type chrome://extensions, then press Enter. This opens a page showing every extension you have installed, along with toggles to turn each one on or off. The page also shows which extensions are currently disabled and why.

You can also reach this page by clicking the three vertical dots in the top right corner of Chrome, selecting "More tools", then clicking "Extensions".

Re-enabling an extension you turned off yourself

Find the extension you want to turn back on in the list. Look for the toggle switch next to its name — it will be gray or off if the extension is disabled. Click the toggle to turn it blue or on. The extension is now active again and will stay active even after you close and reopen Chrome.

If you don't see the extension in the list at all, it may have been uninstalled. You would need to reinstall it from the Chrome Web Store to use it again.

Re-enabling an extension Chrome has blocked

If Chrome automatically disabled the extension, you'll see a message on its details page explaining that it's "no longer supported" or "not verified by Chrome". Click the toggle switch next to the extension name to turn it back on. The extension will become active when ready.

However, Chrome may disable it again the next time you close and reopen the browser. This happens because the extension hasn't been updated by its developer in a long time, and Chrome's security system treats very old extensions as a potential risk. Each time you restart Chrome, you may need to re-enable it again using the same toggle.

Checking why an extension was disabled

Click on the extension's name or the "Details" button next to it to open its full information page. This page shows the extension's description, permissions, and — most importantly — the reason it was disabled. Look for a message that says either "Disabled by user" (meaning you turned it off) or "Not verified" or "No longer supported" (meaning Chrome turned it off).

If it says "Disabled by user", the toggle will stay on permanently once you re-enable it. If it says "Not verified" or "No longer supported", you're re-enabling it temporarily, and Chrome will likely block it again on the next restart.

What to do if you need a permanently blocked extension

If an extension is blocked by Chrome's security system and you need it to stay on, your options are limited. You can re-enable it each time you restart the browser, but this is inconvenient for daily use. The better long-term solution is to contact the extension's developer and ask them to update it so Chrome will verify it again.

You can also look for an alternative extension that does the same thing and is actively maintained. Search the Chrome Web Store for the function you need — for example, "password manager" or "ad blocker" — and choose one with recent updates and good reviews. A newer, actively updated extension will not face the same blocking issues.

Preventing extensions from being disabled in the future

Keep your extensions updated by letting Chrome update them automatically, which is the default setting. Extensions that receive regular updates from their developers are much less likely to be blocked by Chrome's security system.

Avoid installing extensions from outside the Chrome Web Store, since Chrome cannot verify those and may block them more aggressively. Stick to the official store, and read the reviews and update history before installing anything new. An extension with a recent update date and thousands of active users is far more likely to stay supported long-term.

Frequently Asked Questions

Will re-enabling a blocked extension slow down my browser?

A re-enabled extension will use the same resources it did before it was blocked, so it may have a small impact on browser speed depending on what the extension does. If you notice Chrome running slowly after re-enabling something, you can always turn it back off using the same toggle.

Can I re-enable an extension that was removed from the Chrome Web Store?

If you still have it installed, yes — you can re-enable it using the toggle on the extensions page. However, if you uninstalled it, you cannot reinstall it from the Web Store because it's no longer available there. You would need the extension file itself from another source.

Why does Chrome keep disabling my extension every time I restart?

Chrome is blocking it automatically because the extension is very old and hasn't been updated by its developer. This is a security measure. You can re-enable it each session, but the permanent fix is either to find a newer alternative or to contact the developer and ask them to update the extension.

Do I need to reinstall an extension to re-enable it?

No. Re-enabling uses the toggle switch on the extensions page and takes seconds. Reinstalling would remove all the extension's settings and data. Always try the toggle first.