RemoteFX vGPU, a feature that allowed multiple virtual machines to share a physical GPU, was initially introduced in Windows 7. This technology aimed to enhance the graphical capabilities of virtualized environments, making it possible to run graphically demanding applications remotely. However, Microsoft has since deprecated and ultimately removed RemoteFX vGPU from Windows Server, with its final removal in April 2021. This decision was driven by the discovery of architectural security vulnerabilities within the RemoteFX vGPU implementation.
Understanding the RemoteFX vGPU Timeline
The lifecycle of RemoteFX vGPU within Windows Server can be summarized in three key phases:
- Deprecation: RemoteFX vGPU was first marked as deprecated with the release of Windows 10, version 1809 and Windows Server 2019. This signaled the beginning of its phase-out, indicating that Microsoft was no longer recommending its use for new deployments.
- Disablement: In July 2020, RemoteFX vGPU was disabled across all applicable Windows platforms through a security update. This step effectively turned off the feature, preventing it from being used, although it was still present in the system.
- Removal: The final stage occurred in April 2021, with the April Windows security updates. RemoteFX vGPU was completely removed from all applicable Windows platforms. After this update, the feature was no longer part of the operating system.
Why Was RemoteFX vGPU Removed?
The primary reason for the removal of RemoteFX vGPU is security. Significant architectural vulnerabilities were identified, making it susceptible to potential exploits. These vulnerabilities were deemed fundamental to the design of RemoteFX vGPU, and because the feature was already deprecated and removed from newer Windows versions, Microsoft made the decision to eliminate it entirely through security updates.
This proactive measure ensures that systems are no longer exposed to the identified security risks associated with RemoteFX vGPU. Microsoft strongly advises against continuing to use RemoteFX vGPU due to these inherent security concerns.
Seeking Secure Alternatives to RemoteFX vGPU
Given the security vulnerabilities and the removal of RemoteFX vGPU, users are strongly encouraged to adopt alternative solutions for GPU virtualization. A recommended and secure alternative is Discrete Device Assignment (DDA).
DDA offers a secure method for GPU virtualization in Windows Server Long-Term Servicing Channel (LTSC) releases like Windows Server 2016 and Windows Server 2019, as well as Semi-Annual Channel (SAC) releases, starting from Windows Server, version 1803 and later. DDA allows a physical GPU to be directly and exclusively assigned to a virtual machine. This approach enhances security and performance by providing a dedicated GPU resource to the VM, bypassing the shared nature of RemoteFX vGPU that led to vulnerabilities.
For users on older Windows versions predating Windows 10, version 1607, upgrading to a more recent and secure version of Windows Server is advisable to access modern and secure GPU virtualization technologies like DDA.
In conclusion, while RemoteFX vGPU once offered a way to share GPUs in virtual environments, its removal is a necessary step to enhance system security. Migrating to secure alternatives like Discrete Device Assignment is crucial for maintaining robust and graphically capable virtualized environments without compromising security.
