Please make sure your favicon meets the following requirements:
- 1. Your favicon must in .ico format. You can use this ICO Converter.
- 2. The size must be 16px by 16px.
- 3. The image must be transparent (the outer white part should not visible).
Once your favicon has been created properly, upload it again to your site.
Are you using Internet Explorer? Please note this browser requires certain parameters for the favicon to be shown successfully.