I'm having this exact problem as well. It seems like it's affected lots of people for months. It's part of the service I signed up for: why haven't Virgin and Sky got this sorted out between them yet?!
Yes, using Windows 10, disabled antivirus and firewall, and had no luck.
Using Sky sports via Sky Go on the same computer with firewall and anti virus on doesn't seem to have an issue, its on with the Virgin Go app, the app itself works fine though, but when you go to the Sky Sports app, it doesn't work I'm afraid.
Unfortunately this has ground to a halt now and the private support I have been receiving has also dried up because they have had no updates either- I have had nothing concrete back in the best part of a month. This is obviously an issue affecting multiple people. Could this please be escalated?