Hi Gordon153, did the icons go blank or do you ahve a different home page? You can reset your home page to "Firefox Home" on the Options page. See: How to set the home page.

If the page says that an add-on has taken command of your home page, maybe you installed that by accident? You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

• Ctrl+Shift+a (Mac: Command+Shift+a)
• "3-bar" menu button (or Tools menu) > Add-ons
• type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions.

Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious or that you just do not remember installing or why? If in doubt, disable (or remove).

Any improvement?

The icons representing the most visited sites were in the main display window of the browser when it opened. Also I could get to it by clicking on the [Home] icon at the top of the screen.

I clicked on something in the main display area of the browser and they all disappeared, and they have remained absent since I did that.

Any ideas on how to reactivate this feature much appreciated.

You can check the current home page and new tab pages on the "Options/Preferences -> Home" page.

See also:

• https://support.mozilla.org/en-US/kb/firefox-options-preferences-and-settings
• https://support.mozilla.org/en-US/kb/firefox-options-preferences-and-settings#w_home-panel

It was under Home Page -> Top Sites. Thanks.