This one has really stumped me. Two Android phones in the house (GS6 and Pixel 2) can't download apps through Google Play or any updates through the Download Manager. Have tried several fixes recommended online about clearing cache data for Google Play and uninstalling updates, but they haven't fixed the problem.
Google Play works fine when connecting the phones to cellular data, or even to another WiFI network. Therefor, I have to believe the problem is with my FIOS router. I've never messed with the router, but if anyone can suggest router settings that address this problem, I'd appreciate it.