Direct ESXi root has all privileges by default. vCenter’s granular permissions often miss obscure child privileges required by Converter.
The error is a common roadblock during Physical-to-Virtual (P2V) or Virtual-to-Virtual (V2V) migrations using VMware vCenter Converter Standalone . This error typically flags that Windows User Account Control (UAC), insufficient administrative privileges, or restrictive vCenter Server role mappings are blocking the migration task. Primary Cause: Windows User Account Control (UAC)
If the above steps do not resolve the issue, try: Direct ESXi root has all privileges by default
This confirms exactly which privilege is missing – go back to and add that specific privilege.
In some cases, the Converter cannot write to its own data folders. : Navigate to C:\ProgramData\VMware\VMware vCenter Converter Standalone . Grant the user account Full Control over this folder and the sub-folder. Broadcom support portal Troubleshooting Checklist Summary Are you running the client as Administrator UAC/Admin Approval Mode disabled on the source machine? Does the account have Local Admin rights on the Converter server and the source? If migrating a Domain Controller, did you try manually installing the agent For vCenter destinations, are you using administrator@vsphere.local to rule out role issues?. Spiceworks Community manually install the Converter agent on a machine where remote deployment is failing? This error typically flags that Windows User Account
⭐ – Powerful tool when it works, but this error wastes hours due to vague messaging. Once you know the permission hotspots, it becomes predictable. VMware should improve error logging to specify which operation and which object’s permissions were denied.
Converter - Permission to perform this operation was denied. insufficient administrative privileges
If running the app as an administrator fails over a network connection: