We have a number of computers that we want to lock down to certain training websites. We created a manual proxy with an address of 127.0.0.1 port 80 and added exceptions to the sites allowed to visit. All works fine until we found that videos displayed on a site cannot be viewed. One of the training sites has links to videos on YouTube. If I try to go to one, the video is just black.
Any idea why enabling the proxy would prevent this? And is there a way to get around?
We are using Windows 10 on these computers.