The error Wireless network connection doesn’t have a valid ip configuration means that Windows cannot find a valid ip configuration for your current and/or other wireless connections on your systems. An IP address is an identifier on the world-wide web which shows who you are. Each internet user has one (one per household in most cases (99%))
When you are connected to any network using your Windows pc, all the computers using that network get an unique number assign to them in other to keep them apart. But sometimes things don’t go the way there are designed and you get an ip address conflict.