Various issues could prevent your new favicon from displaying correctly after you have updated to replace an existing one. Commonly, display issues are due to the browser accessing a cached version of your page. The following suggestions generally remedy browser-related issues.
Browsers tend to cache Web pages and images and keep them. This means that although you uploaded a new or different icon, the browser is accessing a version of your page it saved before your update. Therefore, you need to try and clear your cache.
For those using Internet Explorer, clearing your cache may not be enough to clear the old favicon and display the new one. You may need to remove your existing favicon file completely.
To Manually Delete Your Favicon on a PC
To Manually Delete Your Favicon on an Mac
If you are using Firefox® and you're using an .ICO file as your favicon, you may need to do a "Force Refresh" to get the icon to display properly.
The forced refresh prompts Firefox to reload the icon instead of a cached version. The updated icon displays in the address bar. However, you may need to restart Firefox to get the icon to display on tabs and in Favorites.
For information on applying your favicon to your Quick Shopping Cart, see Uploading a Favicon.