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Copy file name to clipboardExpand all lines: support/windows-server/virtualization/hyper-v-start-state-access-failures-clustered-standalone.md
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@@ -51,11 +51,12 @@ Hyper-V VM failures might originate from several root causes categorized as foll
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-[Cause 4: Permissions, security, and driver problems](#cause-4-permissions-security-and-driver-problems)
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-[Cause 5: Cluster, network, and failover issues](#cause-5-cluster-network-and-failover-issues)
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> [!NOTE]
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> To resolve these issues, perform the initial checks using the following steps:
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>
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> 1. Identify error messages, event IDs, and affected VMs using Hyper-V Manager, Failover Cluster Manager, or PowerShell.
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> 2. Review system logs, Hyper-V logs, and cluster event logs for relevant entries.
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## Initial checks before proceeding
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To resolve these issues, perform the initial checks using the following steps:
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1. Identify error messages, event IDs, and affected VMs using Hyper-V Manager, Failover Cluster Manager, or PowerShell.
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2. Review system logs, Hyper-V logs, and cluster event logs for relevant entries.
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## Cause 1: Configuration and metadata corruption
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- Orphaned checkpoints, incomplete merges, or invalid entries in configuration files block VM operations.
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- Duplicate VM GUIDs or object entries, particularly with System Center Virtual Machine Manager (SCVMM), can cause "already exists" errors and prevent VM imports or starts.
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To resolve this issue, see [File system and storage checks](#resolution-file-system-and-storage-checks).
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## Cause 2: Storage and file system issues
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- CSVs or volumes are offline, RAW, or inaccessible due to storage subsystem failures, disk corruption, or drive letter conflicts.
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- Improper cluster configurations or inconsistent patching across nodes cause instability.
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- Live migration or failover failures occur due to insufficient memory, incompatible settings, or node misconfigurations.
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### Resolution: Cluster and network remediation
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### Resolution 1: Cluster and network remediation
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1. Validate cluster health and configuration using the cluster validation wizard or:
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3. Ensure consistent patching and proper network/storage configurations across nodes.
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### Resolution: VM configuration repairs and rebuilds
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### Resolution 2: VM configuration repairs and rebuilds
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1. For corrupt configuration files, edit the `.VMCX` file or create a new VM with existing disks.
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2. Address saved state or checkpoint issues by removing invalid checkpoints or reattaching disks.
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