I tried the various temporary fixes on three different computers....two worked and one did not and it is on the same network as one of the computers where the fix worked. So, to take ESET out of the picture, I uninstalled ESET on the one where it did not work and I am still unable to use Chromecast, so there is something wrong outside of ESET on one of my PCs. I'm not looking for answers to that issue here, however...just wanted to throw it out there.