Licence error

I am getting the following error when I enter my licence on a free version.

problem has occured when contacting licence server. The request failed with HTTP Status 407;Proxy authentication requie] red

Hello Pauline, seems like you’re using proxy settings on your computer, eM Client unfortunately doesn’t support proxy authentication so you won’t be able to use these settings unless you’re using windows credentials for authentication, please make sure to adjust your proxy settings and setup an exception for eM Client or disable your proxy setup.