Sorry, no tips. But I can commiserate. My WiFi connections frequently show that my devices (phones, tables, laptops) are "connected, but no internet". Gateway restart temporarily fixes the issue. Online diagnostic tool tells me that something is wrong that may be impacting my internet experience and offers to restart the gateway. This just keeps happening over and over and over again. Same thing or something different? Preventing me from working from home, which is less than ideal during a quarantine...
Having a similar problem. Have to restart the gateway once per day in the morning. Just upgraded to the new gateway and totally regretting it. Does anyone know if using built-in gateway wifi network + having an additional wireless router could be the source of this type of problem?
I don't know. I punted and went to the Xfinity store and got a new modem. Solved part of the problem. But I had my house wired w/ ethernet cable. If I plug in ONLY my wife's computer to the modem, everything works fine, but if I plug in the ethernet cable that feeds the rest of the house (through various splitters, etc.) then the wifi connection on my laptop (WIN 10) and my daughter's laptop (MacBook Pro) (and sometimes our mobile phones - Android and iPhone) start connecting and dropping or just getting "connected, no internet". I no longer have a separate router hooked up, although I used to. I did purchase a Ubiquity WAP, but it has been disconnected since I started having this problem since I couldn't get it into bridge mode w/ the Xfinity modem.
3 month old dead thread now being closed.