Having to toggle Guest Mode to discover Chromecast

[AC Question]

Have been using my Chromecast from my android phone and laptop for at least a year. Last week I get the "no devices available" from the laptop but still working from my phone. Unable to figure out the issue after 2 days the device then disappears from my android as well.

My Chromecast and all other devices are on the same 2.4 ghz network, same SSID

fixes I've tried:
- disable VPN drivers (there weren't any)
- factory reset chromecast.
- try another chromecast
- disable AP Isolation, which isn't a function on my router.

My temporary fix:

Enabling Guest Mode on my Hitron router makes the chromecast discoverable for a couple hours. Then I have to disable it to get another couple hours, then enable again.... back and forth every few hours.

Is there something I'm missing? Any idea what my issue is and how I fix it permanently? Have been using a Chromecast for ages, no idea why I'm suddenly having so many issues.

Thanks

 

[B. Diddy]

Welcome to Android Central! Did you also reboot the router, by unplugging its power for 10 seconds and then plugging it back in?

 

[Andrew Stewart4]

Yes. I've run every fix I can find. I don't know why it stopped working all of a sudden and I don't know why toggling guest mode on my router provides a quick temporary fix

 

[B. Diddy]

Have you checked the web to see if there's a firmware update for the router?