xFi Advanced Gateway blinking green light fix?

@flatlander3​ the problem started when an outage was in my area yesterday. The outage has since been fixed but my gateway continues to not be able to connect to the internet 

Well, there's no promise that factory default will fix it, but when there's nothing left to try......

*Caution:  I'm not sure how the WiFi settings will work on their gear these days.  I don't use their stuff.  Don't know if they are loaded from upstream, or if they are still local, but factory default may wipe out SSID settings and WiFi passwords.  You also might have to change those settings with the phone app again, then "forget" the previous network connection on your devices, then reconnect them to get them to work.  Yes.  It's a bummer.

To factory default their newer gateways, mash the WPS button down and hold it for 20-30 seconds, or until the lights start blinking.  On really old stuff, there was a toothpick hole and a button to push and hold down.

It ought to have come back by itself after service was restored, especially after you tried the power cycle, so perhaps your service is still down.  If that's the case, then 1-800-comcast and multi-level tech support may be your next phone call or the "Chat with Xfinity Agent" (bot) link on the bottom of that status page.

@flatlander3​ gave the factory reset a shot, still no success. I have a technician coming out tmrw morning to try and fix the issue. I’ll update whenever I have new info.