Users typically encounter 0xc00305b4 in these situations:
No. The error means the writing process was incomplete. The USB drive will be unbootable or corrupted. You must resolve the error and re-write. rufus error code 0xc00305b4
The irony of this error is that it most often appears precisely when a user has the correct administrative intentions. The user right-clicks Rufus and selects “Run as administrator,” assuming this grants unlimited power. However, virtualization-based security (VBS) and memory integrity run at a higher privilege level than even the administrator account. Consequently, the user is caught in a security catch-22: they need low-level access to create a bootable drive, but the operating system refuses to grant it for the drive’s own protection. This is why the error is rare on older versions of Windows (7 and earlier) or on stripped-down systems—those environments lack the advanced hypervisor security layers that cause the conflict. You must resolve the error and re-write
Follow these solutions in order. Start with the simplest (fixes 80% of cases) and work your way down. ” assuming this grants unlimited power.
Windows saves power by turning off USB ports. This can interrupt a write operation.
Have you encountered this error with a specific ISO? Did another solution work for you? Share your experience in the comments below to help other users.
Windows Security’s "Controlled Folder Access" feature prevents unauthorized apps from making changes to disk sectors. Rufus is often blocked.