winows cast to tv not working

[Twigg35]

To connect to smart tv I tried connecting wirlesly and it suggested downloading the app, did that

Checked connection and they are both connected to the same newtwork

When I try to conect it finds the tv but will not conect, just says cannot connect, no other info, just says that ?

[#2]

Try pressing Windows + K, check if the Smart TV is now available to cast.

[#3]

@Kapil Arya 

Yes it does show it, but when i try to connect it does nothing for some time, then says failed to connect

The tv gives its address and a pin, but windows does not ask for the pin ?

[#4]

Try pairing it first from Settings > Bluetooth & devices > Devices > Add device.

[#5]

yep that worked, how strange as it still uses the same interface , lol
Thank you for your help