Forum response - Search and Homepage issues after Add-on break

If your home page, New Tab page, or search settings have been set by an add-on, you can do the following to change them back to your preferred settings:

Home Page or New Tab page

1. Type about:preferences in your address bar.
2. Click Home on the left panel.
3. Under New Windows and Tabs, click Disable Extension if an add-on is shown as controlling your home page or New Tab page.
4. Choose your desired home page or New Tab page by clicking the drop-down menu next to Home page and new windows and New tabs.

To learn more, see An extension changed my New Tab page or home page.

Search settings

1. Type about:preferences in your address bar.
2. Click Search on the left panel.
3. Choose a default search engine and any other preferred search settings.

To learn more, see Change your default search settings in Firefox - Default search engine.