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| ERROR_SVHDX_WRONG_FILE_TYPE | ERROR_VHD_SHARED |
ERROR_SVHDX_VERSION_MISMATCH
Protocol compatibility failed
ERROR_SVHDX_VERSION_MISMATCH means the server version does not match the version requested by the Shared VHDX client. This is a compatibility failure in the remote virtual-disk path, not a claim that the VHDX file format is invalid. The relevant versions can be tied to the components participating in shared-disk access, and a file that is valid on disk cannot compensate for a client and server that do not agree on the required protocol behavior.
Remote Shared Virtual Disk implementations support opening, querying, administering, reserving, reading, and writing virtual disk objects, including forwarding SCSI operations. Those operations must be interpreted consistently at both ends. A mixed host, cluster, or service update level can therefore expose a version mismatch before data I/O begins.
Checks that distinguish the cause
- Record the requested and negotiated version values from the client and server logs or protocol trace.
- Compare the software and update levels of every participating host, file server, virtualization component, and management service that takes part in the shared-disk path.
- Verify that the workload is using the intended shared-virtual-disk feature and deployment mode, rather than a client for a different generation or capability set.
- Do not modify the VHDX file to solve a protocol mismatch. Correct the component compatibility and retest the open or negotiate step before attempting recovery I/O.
Related statuses
ERROR_SVHDX_WRONG_FILE_TYPE rejects an unsupported virtual-disk type. ERROR_SVHDX_ERROR_STORED indicates that a server retained lower-level failure details. Neither tells you that the peer versions agree; this HRESULT specifically points to a client-server compatibility boundary.
References
- Microsoft Open Specifications: Remote Shared Virtual Disk Protocol
- Microsoft Open Specifications: VHDX format
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