Hi all, I'm experiencing some issues when using VirtualBox with Hera as Host. When trying to start my Windows guest I get prompted with the following error: Code (Text): The VirtualBox Linux kernel driver is either not loaded or not set up correctly. Please try setting it up again by executing '/sbin/vboxconfig' as root. If your system has EFI Secure Boot enabled you may also need to sign the kernel modules (vboxdrv, vboxnetflt, vboxnetadp, vboxpci) before you can load them. Please see your Linux system's documentation for more information. where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT. I have secure boot disabled and executing '/sbin/vboxconfig' fails with the following logs: Code (Text): Building the main VirtualBox module. Error building the module: make V=1 CONFIG_MODULE_SIG= CONFIG_MODULE_SIG_ALL= -C /lib/modules/4.15.0-99-generic/build M=/tmp/vbox.0 SRCROOT=/tmp/vbox.0 -j8 modules make[1]: warning: -jN forced in submake: disabling jobserver mode. /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory mkdir -p /tmp/vbox.0/.tmp_versions ; rm -f /tmp/vbox.0/.tmp_versions/* make -f ./scripts/Makefile.build obj=/tmp/vbox.0 gcc -Wp,-MD,/tmp/vbox.0/linux/.SUPDrv-linux.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/includ$ gcc -Wp,-MD,/tmp/vbox.0/.SUPDrv.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I./a$ gcc -Wp,-MD,/tmp/vbox.0/.SUPDrvGip.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I$ /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory gcc -Wp,-MD,/tmp/vbox.0/.SUPDrvSem.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I$ /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory gcc -Wp,-MD,/tmp/vbox.0/.SUPLibAll.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi -I$ /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory gcc -Wp,-MD,/tmp/vbox.0/.SUPDrvTracer.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include/uapi$ /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory gcc -Wp,-MD,/tmp/vbox.0/r0drv/.alloc-r0drv.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/include$ scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/linux/SUPDrv-linux.o' failed make[2]: *** [/tmp/vbox.0/linux/SUPDrv-linux.o] Error 1 make[2]: *** Waiting for unfinished jobs.... scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/SUPDrv.o' failed make[2]: *** [/tmp/vbox.0/SUPDrv.o] Error 1 gcc -Wp,-MD,/tmp/vbox.0/r0drv/.initterm-r0drv.o.d -nostdinc -isystem /opt/gcc-9.2.1/lib/gcc/x86_64-pc-linux-gnu/9.2.1/include -I./arch/x86/include -I./arch/x86/include/generated -I./include -I./arch/x86/incl$ /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/SUPDrvSem.o' failed make[2]: *** [/tmp/vbox.0/SUPDrvSem.o] Error 1 scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/SUPDrvGip.o' failed make[2]: *** [/tmp/vbox.0/SUPDrvGip.o] Error 1 /opt/gcc-9.2.1/libexec/gcc/x86_64-pc-linux-gnu/9.2.1/cc1: error while loading shared libraries: libisl.so.21: cannot open shared object file: No such file or directory scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/SUPDrvTracer.o' failed make[2]: *** [/tmp/vbox.0/SUPDrvTracer.o] Error 1 scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/SUPLibAll.o' failed make[2]: *** [/tmp/vbox.0/SUPLibAll.o] Error 1 scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/r0drv/alloc-r0drv.o' failed make[2]: *** [/tmp/vbox.0/r0drv/alloc-r0drv.o] Error 1 scripts/Makefile.build:330: recipe for target '/tmp/vbox.0/r0drv/initterm-r0drv.o' failed make[2]: *** [/tmp/vbox.0/r0drv/initterm-r0drv.o] Error 1 Makefile:1577: recipe for target '_module_/tmp/vbox.0' failed make[1]: *** [_module_/tmp/vbox.0] Error 2 /tmp/vbox.0/Makefile-footer.gmk:114: recipe for target 'vboxdrv' failed I have: * Reinstalled VirtualBox, * Tried several different versions of VirtualBox, * Reinstalled dkms, virtualbox-dkms and headers, * Tried installing the shared libraries, * Updated my system. All without success. Has anyone else experienced this issue? I'm running out of ideas here. This started after I rebooted my system after having it running over several system updates. Thank you so much for your help! /MrSongseng