Hi guys a little tricky one here.
I can not cast from my windows PC to my Roku. My laptop works just fine. Both are on the latest version of windows 11. Laptop has all the "fun" windows firewalls and network default settings on at installation, PC has firewall down. No aftermarket firewall, just windows. Interestingly, my Google Pixel 8 can cast from the youtube app but no other apps or home screen.
My PC will detect the Roku but it will never get passed about 1/3 of the way and looks like all the photos provided in the linked thread below. If I find a solution I'll post it but I am getting a Chromecast tomorrow.
https://community.roku.com/t5/Features-settings-updates/Casting-screen-mirror-fails-on-PC-Laptop-cau...
Before you ask.
I am using a Roku Ultra Model 4800x
My router is a Netgear Nighthawk (no firewall)
Yes, I've gone through the Roku system settings to enable casting
Yes, I've tried every half-baked idea I can find on reddit, youtube, or here
No, it's not my connection to the router
Running on Microsoft Windows 11 Home - 10.0.22631