Question Two wireless TVs via Roku, can't run apps ?

[bobbee25]

Win11 pc with tplink c4000 router. worked fine for years.
Now
If I run the roku network check on either roku, both show all the network info and excellent connection.
But try any application and it shows no network available.

Tried skipping roku and running an app from smart tv, just buffers

Powered router off and on, no luck.

??????????

 

[KingLoki]

If you have the roku's connected by wifi, can you connect them to the router via ethernet?

 

[bobbee25]

If you have the roku's connected by wifi, can you connect them to the router via ethernet?

no

 

[KingLoki]

Maybe a firewall problem in the router. May need to add exception/port forward to allow them through ??

 

[bobbee25]

no change

 

[KingLoki]

Try turning off ipv6 in router.
Try changing frequencies, 2.4ghz or 5ghz, whichever your not using at the moment.

 

[bobbee25]

Tried it. Ethernet works good, brought a wireless device and put it next to the router, no signal.

 

[KingLoki]

So, running an app through the smart tv actually connects ok with wifi? ..but just buffers ??