Hyper-V Virtual Machine Failed to Start: Troubleshooting Runbook

Capture the exact error

Record the Hyper-V Manager or PowerShell error before changing the VM. Check Hyper-V-VMMS and Hyper-V-Worker event logs.

Check VM configuration

Use Get-VM VMName | Format-List * and inspect attached disks, virtual NICs, checkpoints and firmware settings.

Validate storage

Confirm the VM configuration and VHDX files exist at the configured paths and that the host or cluster node has access.

Check permissions

For clustered VMs, validate the computer object and cluster identity have the required permissions on storage. Avoid broad permissions changes.

Check networking

A missing virtual switch can prevent startup or leave the VM without network connectivity. Compare the VM network adapter configuration with available switches.

Validate resources

Check free disk space, memory pressure and any cluster resource failures. Start the VM after correcting the specific fault and verify its integration services.