Hello, I'm using zen cart v 1.3.9h and having trouble with this as well. I named a new one, mcm_favicon.png, uploaded to the root directory, changed the meta_tags.php in my includes/languages/english/TEMPLATE/ folder and also the meta_tag.php found in the includes/languages/english/ folder. Still showing the favicon.ico I already have in there. I have cleared my cookies and temp files. Please help!