I've upgraded to the latest Firefox, but something is preventing websites from reading that I have upgraded. I have already tried uninstalling and reinstalling. At first I thought it was a specific website, but I have found that it's affecting my websites on an overall way. Again I have already tried uninstalling and reinstalling firefox. It also doesn't seem to affect any of my other internet browsers. This wouldn't be an issue, but most websites are demanding I upgrade and even disabling me from using certain features until I do.