Just updated my Parallels installation to the latest release (17.1.3), and it looks like some of the Parallels Tools Kernel Extensions are broken in the latest release. I'm running a full suite of macOS guests - ranging from 10.6 through Monterey - and this is what I'm seeing: * 10.6 - 10.9 - Parallels kexts appear (?) to be okay, at least superficially. Not 100% sure though. * 10.10 - 10.15 - multiple Parallels kexts are failing to load, with signature-related errors. Result: shared folders non-functional; slow screen updates; sluggish mouse movement; etc. * Big Sur and Montery - Parellels kexts appear (?) to be okay. Again, not 100% certain though. What is clear, is that there are issues for 10.10, 10.11, 10.12, 10.13, 10.14, and 10.15. Is anyone else seeing similar, things after updating to 17.1.3?