1Y0-204 App and Desktop Image Management Practice Question
Exhibit
[I/O Error] MCS plugin failed to locate snapshot 'Snap-2023-V2' on hypervisor connection 'vCenter-Datacenter-01'. Provisioning operation aborted.
Refer to the exhibit. An administrator attempts to update a Machine Creation Services catalog, but the provisioning task fails immediately with the displayed error message. What is the most likely root cause of this failure?
⚠ Common exam trap
Candidates often troubleshoot the Delivery Controller or network settings, failing to realize that MCS is strictly dependent on the hypervisor snapshot remaining untouched after the catalog is created.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The hypervisor administrator deleted or renamed the required snapshot on the hypervisor.
Machine Creation Services relies on hypervisor snapshots to build differential disks for provisioned virtual machines. If the snapshot referenced by the catalog configuration was manually deleted or renamed within the hypervisor management console, the Delivery Controller loses its reference point and aborts the provisioning workflow.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The target hypervisor storage repository has run out of available datastore capacity.
Why it's wrong here
While datastore exhaustion causes provisioning failures, the specific error text explicitly cites an inability to locate the snapshot rather than an insufficient disk space condition. The missing reference points directly to administrative tampering with hypervisor snapshot objects.
- ✗
The master image virtual machine is currently powered on during the update task.
Why it's wrong here
Having a master image powered on prevents certain hypervisor operations, but MCS typically takes a new snapshot automatically rather than failing to find an already recorded snapshot name. The missing object indicates deletion from the hypervisor inventory.
- ✓
The hypervisor administrator deleted or renamed the required snapshot on the hypervisor.
Why this is correct
MCS stores a direct dependency reference to the exact snapshot name created during the initial image preparation phase. Deleting or renaming this snapshot outside the Citrix console breaks the association, resulting in immediate task aborts and failure messages.
- ✗
The Delivery Controller lost network connectivity to the Active Directory domain controller.
Why it's wrong here
A lost Delivery Controller connection to the domain controller would break authentication broadly, not fail a provisioning task immediately with a catalog-specific error. It is tempting because domain connectivity is a genuine prerequisite for MCS, but the displayed message points to the hosting unit or identity pool used for provisioning.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Citrix exam blueprint
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