Converter Standalone saves log files as it operates.

Log Files Locations lists the default locations where log files are saved. You can view the log files or send them to VMware support, if necessary.

If you are running a remote hot clone, these file locations are also the file locations on the remote machine. To send these log files from a remote machine to VMware support, you must manually compress and send them.
Table 1. Log Files Locations
Log Files File Path
Converter Standalone server and agent log files %ALLUSERSPROFILE%\VMware\VMware vCenter Converter Standalone\
Converter Standalone client log files %USERPROFILE%\Local Settings\Application Data\VMware\VMware vCenter Converter Standalone Client\