I found that quite a lot of people omit Internet Explorer browser, when they are doing the CSS.
For example like the custom cursor. In Firefox, Safari and Chrome, it can display property when you use PNG image format, but it not for IE. that’s the reason why custom cursor not working on IE browser.
To fix this problem, you need convert the image from PNG to cur. You can try view my example.
To convert the PNG to cur. You can download the free trial (30 days) axialis Cursorworkshop.