Are you saying that Passkey can read the same UHD disc, but Windows Explorer won't open it?
If Windows doesn't recognize the disc, Passkey won't be able to detect and load it.
What if you open it in Windows directly without running any other software?
Mona
That is exactly what is bizarre about this.
I also tried inserting the disc without passkey and it is the same (Windows ejects the disc) but I managed to create a backup using makemkv
Maybe I should just try rebooting the computer