I suspect that my Roku Premiere+ is defective, giving erroneous HDCP 2.2 errors, and want other's to weigh in.
Every 4 to 24 hours I get an HDCP 2.2 error. I follow the instructions to the 'T' and it would work again but for a few hours.
I did a hard reset (pressing the reset button on the back of the Roku), still the same error.
I have replaced the HDMI cable, still the same error.
I reluctantly bought a Roku Ultra, works fine, no issues.
I don't have another 4K TV to test on, so can't rule out an issue with the TV.
I would say the issue is pretty much straight forward, it's the ROKU or the TV. If it's the Roku does anyone have a suggestion how to fix this?
Naturally, certified cables can fail, but you've tried a different one. Have you tried a different HDMI port on the TV? Do you have UHD Color enabled on the HDMI port(s) you've tried?
And just as a precaution, you might try blowing air into the HDMI connections on the Roku and TV, in case there's some fuzzball stuck in there that you can't see.