Favicon shows incorrect image

I have a page which was copied from another site and modified. I am referring to a favicon in my new site. When I view the page it's开发者_如何学编程 showing the correct favicon, but when view the source it's showing the favicon for the older site.

What could be the problem?

Favicon caching in browsers is virtually impossible to control. Even if you clear your cache, the browser probably won't clear favicons until a random time in the future it feels like doing so.

New users of your site will see the new favicon. Old users will eventually see the new icon.