Do a quick search on here and you'll find countless posts about this.
I had the issue occassionally until I recently switched from Sky Broadband to Fibrus. Fibrus provided me with a new set of eero routers to create a Wifi6e network that has thus far been better than my previous Sky setup in every single way - every way excpet one: Sky Q connectivity. Since then - and most recently in the last couple of days - my Sky box keeps telling me I don't have an internet connection when every other device in the house tells me I do. Only Sky Q is affected.
The 'fix' (and I can't even call it that because it doesn't fix anything every time) is to power off the Q box, then reset the wifi connection to my router (which forces me each time to reenter the wifi password...). Sometimes it works for a while, most of the time it doesn't. I've come to the conclusion that the instability appears to be more frequent when I'm trying to download something (new episodes for example), so I'm 100% confident the issue is the Sky Q box end and not the internet/broadband/wifi router end.
Seems the general consensus is that this is a Sky Q hardware issue with Mesh/Wifi6e/non-Sky routers/something - no one seems to really be sure.
I've an engineer coming next Friday to look at it.
