Security modules like SELinux (RHEL/CentOS) or AppArmor (Ubuntu/Debian) may block the Converter agent’s temporary files from executing.
The error "" in VMware vCenter Converter Standalone usually occurs when the tool cannot successfully execute its sysinfo utility on the source machine to gather disk and partition information. Core Troubleshooting Steps
Add the following line for your user: username ALL=(ALL) NOPASSWD: ALL .
Must be open from the machine running the Converter Standalone server to the source Linux machine.