Proxy settings

I have a Business license. I have a laptop I use to connect to the office desktop when out of the office. When i attempt to connect, the connection doesn't happen. On the desktop when I return to the office is a warning to check my internet connection and that my proxy settings may need changed. My internet is working. I have two desktops at the office. I can connect to one but the other one gives me this problem. Fix or Suggestions?

Windows 10 environment.