VirtualBox 6.1.28 fails to load R0 module (`VERR_LDR_GENERAL_FAILURE`) on Windows

Question

VirtualBox 6.1.28 fails to start a box on Windows with the following error:

Failed to load R0 module C:\Program Files\Oracle\VirtualBox/VMMR0.r0:
SUP_IOCTL_LDR_OPEN failed (VERR_LDR_GENERAL_FAILURE).
Failed to load VMMR0.r0 (VERR_LDR_GENERAL_FAILURE).

Answer 1

VirtualBox v. 6.1.28 is buggy, use another version (e.g. 6.1.26 or 6.1.32) which you can download from https://www.virtualbox.org/wiki/Download_Old_Builds_6_1

The issue is tracked as https://www.virtualbox.org/ticket/20694 and was fixed in v. 6.1.32.