C:\WINDOWS\system32\drivers\etc下找到hosts 用记事本方式打开` 加入以下代码：
111.221.33.253 cdn.steamcommunity.com111.221.33.254 cdn.steampowered.com111.221.33.253 cdn.store.steampowered.com111.221.33.254 media.steampowered.com111.221.33.253 cloud.steampowered.com111.221.33.254 storefront.steampowered.com111.221.33.253 store.valvesoftware.com
记得在下面直接加入，但要和源文件的最后一行空开格！ 修改后保存，就可以了。