I work with computers all the time, and have been getting stuck with this message a lot. Bumbling through like everyone else. I found a solution today and have a theory on how it happens. I believe it happens when the data structure that is passed to set up the network is damaged it simply stops working and gives you the message “ Acquiring Network Address” Which actually that is what is is trying to do.
How or why for us I don't think matters much. This is a solution that I had come up with when I had three laptop computers on the network and a identical laptop that was on the other day working and today not working.

I found and deleted the network place off the computer. The computer then recognized it as a location I could sign into. I selected it and had to enter the network key. And it came up the first time.

Don't know if it will solve all the problems that I have read about. But it certainly worked for me.

Good luck

Frank