favicon.ico not showing in chrome code example

Example 1: favicon.ico not showing in chrome

<link rel="icon" href="favicon.ico" type="image/x-icon" />
<link rel="shortcut icon" href="favicon.ico" type="image/x-icon" />

Example 2: favicon.ico not showing in chrome

<link rel="icon" type="image/gif" href="favicon.gif" />
<link rel="icon" type="image/png" href="favicon.png" />

Example 3: favicon.ico not showing in chrome

<link rel="icon" type="image/x-icon" href="favicon.ico?v=2"  />