Same issue on stable Oreo! Only reboot helps. I am thinking about returning my phone. :(
So, I changed "Keep Wi-Fi on during sleep" to "Always" in settings and it seemed to work for now. Guys, try this and tell if this solved the problem for you.
Getting the same fault on Oreo. Wifi keeps dropping out
before the 8.1 update wifi was working fine in my room and the wifi router is kept in other room but after update its having issues i have stand very near to wifi router to get connectivity or the phone says wifi has no internet connection
I have this issue two, already did a factory reset and nothing. Nokia can you help us with an update?
I love my phone but right now its very annoying to use it like this.
I had these WIFI "Connected, but no Internet" issue where the WiFi icon has a small "x" on it.
Since I could connect to another phone's hotspot and not have an issue, I narrowed down the problem to the TP-Link router I had. Got a NetGear router and there were no issues. Then I upgraded to more powerful TP-Link and this issue came back. This time I decide to dig into the issue. The logs told me that there was a UDP dos attack from the mac id belonging to the phone. Then when I checked, the router had blocked the phone. I unblocked it and the phone got it's connectivity sorted out.
Now, I have to put the dos attack protection to medium for UDP until Google fixes it's problem. It's a known issue where even Google's own routers have blocked phones and other devices before.