Sometimes this can happen due to a proxy or firewall connection. If that isn't the issue, then you can try to make a change that will use a different method of checking inet connectivity. 

Locate the config.xml in your /System folder inside your settings (C:\ProgramData\Centrafuse\Centrafuse Auto\<Windows user>\System)

Open the config.xml file in a text editor like Notepad and edit this line:   <INTERNETURL></INTERNETURL>

Modify it by adding a site such as inside, such as:   <INTERNETURL></INTERNETURL>

Save the file and restart CF. This will make CF try to PING instead of using the built-in method which clearly isn't working on your machine. 

If this doesn't help, I'd suggest trying a different Wifi network, or even a different Wifi adapter to remedy the issue.