A 404 Error With Strategic Consequences
On August 25, 2026, with no press release, no changelog, and no advance warning, Broadcom quietly killed public access to the Virtual Disk Development Kit (VDDK). Download URLs for this critical library now return a 404 error. When multiple impacted teams reached out to Broadcom support, the company confirmed that VDDK is "no longer available for use or download" in its previous form.
What looks like a minor portal update is, in practice, a decision with far-reaching consequences for any IT team planning a VMware exit.
What VDDK Actually Does
VDDK is the software layer that enables third-party tools to read and move VMware virtual disks from outside the hypervisor. Without this SDK, many of the market's most widely adopted migration solutions are now partially or fully blocked.
The tools directly affected include Azure Migrate (agentless mode), the Red Hat Migration Toolkit for Virtualization, Nutanix Move, and virt-v2v and nbdkit — the foundation for a large share of KVM-based migrations. In short: nearly every major escape route from VMware depended on a component owned by Broadcom.
Access Now Tied to an Active License
Pulling public access doesn't mean VDDK has disappeared entirely. It remains available through Broadcom's support portal — but exclusively for customers with an active VMware license. The catch is hard to overlook: to gain the right to migrate your virtual machines out of the VMware ecosystem, you must first prove you're still an active customer of that ecosystem.
Microsoft updated its Azure Migrate documentation in late August 2026, now recommending agent-based migration as an alternative. Red Hat published a support note clarifying it cannot redistribute proprietary Broadcom software. Platform9 and ShapeBlue have both publicly documented the impact for their respective customer bases.
The Bigger Picture: An Acquisition Under Strain
Since Broadcom's $61 billion acquisition of VMware in November 2023, the company has made a string of sweeping changes: eliminating perpetual licenses, forcing customers onto subscriptions, and rolling out price increases ranging from 300% to 1,200% depending on configuration. According to a Foundry and CIO.com study of more than 550 IT decision-makers, 56% of respondents plan to reduce their VMware footprint and 71% are actively evaluating alternatives — with Proxmox VE evaluations reportedly growing approximately 340% year-over-year over the 2024–2025 period.
The VDDK restriction sits squarely within this broader tension between Broadcom and its installed base. Whether it represents a thinly veiled pricing lever, an intellectual property protection play, or a straightforward internal policy shift, no official explanation has been provided to date.
What IT Leaders Need to Do Now
For CIOs and infrastructure teams already committed to a VMware transition, the impact cuts two ways. First: verify whether your current migration tooling depends on VDDK, and whether your VMware license will still be valid when you plan to trigger the migration. Second: explore alternatives — agent-based migrations remain functional, and Proxmox offers a native import utility that does not rely on this SDK.
Exit paths still exist. But they are longer, more complex, and your migration project timelines deserve an urgent reassessment.