For me, the problem is with Malwarebytes. I had to add exclusion for application Videostream for Google Chromecast. Before that, I tried to turn off my anti-virus Avast, the free version, and that didn't fix it so Avast is not the problem. I also checked my Windows firewall and Videostream is already allowed through firewall.
I found the location of Videostream by right-clicking on the app icon, them go to "more" then "Open file location." Open Malwarebytes, go to Settings, then Exclusions, then Add Exclusion, then choose Exclude an Application that Connects to the Internet, and then browse to the location to select Videostream.
That is it. Hope it works for you all.