Skin is not visible for other players in LAN or online

When I want to play with someone in LAN or online, they can't see my skin. I have a skin uploaded already.This is happening since the beginning of 1.7
I was sent here by @MojangSupport

When i logged in i hoped to play as a normal day.

Everyone started saying that i didn't have a skin, i looked like steve

This happens every time I try to connect with someone