Internet connection problems!

[randomlola]

Ok I have two servers on my computer: A guest server and my own server; the internet worked well on both servers but when I used the internet on my guest server, a window popped up saying something wasn’t working, causing the internet to not work on the guest server; when I went on my own server the internet worked normally (just not on my guest server) how can I fix the problem where I can get the internet to work on my guest server, because i cant seem to find the problem!