Can confirm. Yeah, that's a good point. Also, try disabling CSM in your BIOS if it's on, as that can sometimes block Secure Boot from working properly.
Can confirm. Another option is to try disabling Secure Boot in your BIOS, saving and exiting, then re-enabling it to force a fresh handshake with the system. Let me know if that works.
I had the same problem. For me, I had to go into the BIOS and change the Secure Boot mode from "Custom" to "Standard" before it would finally pass the check.