If you are using Linux Mint, the likely problem is that the Virtual Machine settings is not connected to the internet. To make sure that this is the case and nothing else is wrong, here is how you can check. There are many reasons why you may be having trouble with your Parallels Desktop Linux Mint internet connection. One example of this is if the error message states that the IP address has changed, or there is no DNS server available. If I am using a terminal program such as ssh or using the web browser, it will say "Cannot Connect" to the internet when ever it tries to load the page. If i reboot into Windows 10 and connect using a cable modem (not wifi) it works fine.