Hi, Seems like that time of the year when I update to the shiny new kernel in my Arch and can no longer boot my VM came again. This time it took me quite a bit of time to fix all the incompatibilities (around 2.5 hours ), but I am up and running again. Attached is the patch against the latest Parallel Tools (as of this writing). It works for me, but I am providing this as-is, so use your own judgement. To apply the patch you need to unpack the "kmods/prl_mod.tar.gz" archive and then run "patch -p1 < /path/to/where/you/saved/parallels-tools-18.104.22.168160-kernel-5.11.1.diff". What to do next depends on your setup. You may repack the archive back and update using the official process (I never used it, so don't know how it works). If you are using DKMS, then you can just run "dkms add ." in that directory where you unpacked and patched files and it will add the modules to the current kernel.