@jcs @jcs I had an issue with this as well.Never had any issues connecting up until a while back where it just wouldn't connect anymore.Not sure what set up you have but click notifications icon at bottom right of PC screen, click connect then click projecting to this PC.Where it says some Windows & Android devices can project to this PC when you allow them to, click on the box below & make sure it's set to Available everywhere.Below that, it says Ask to project to this PC, click on box below & set to First time only.This worked for me, hope this helps.
My windows 10 laptop that once connected great wirelessley to my TV now will not.
When clicking connect from the notification center, then clicking on my LG webOS TV I see this on the TV screen
My PC name requests screen sharing to your TV with a magenta decline button, then shows unable to connect with screen share. Try again.
on windows 10 it says: connecting, follow any instructions on your device then in yellow it says couldn't connect
TV is hardwired ethernet and laptop is on 5GHz wifi. Same laptop and tv used to connect no problem.
I think this couldn't possible cause on the Philips TVs don't use a software to do this feature, but only WiFi enlaced with the HUE bridge and iOS App. And it's only works in selecteds Philips Ambilight TV models. I have an Philips Ambilght 42 5000 series and works fine with HUE bridge from first and second generation, and would be very good working with my LG Oled 55B7P too. But, how I told before, I believe it's not possible. I hope my information can will be usefull. Enviado do meu iPhone usando Tapatalk
http://www.translatetheweb.com/?from=ru&to=en&dl=en&a=http%3A%2F%2Fwebos-forums.ru%2Ftopic3157.html - in english
http://webos-forums.ru/topic3157.html - if you know Russian language.
http://www.translatetheweb.com/?from=&to=en&dl=en&rr=HE&a=http%3a%2f%2fwebos-forums.ru%2fforum60.html - in english
http://webos-forums.ru/post81596.html#p81596 - if you know Russian language.