1 person found this helpful
Try to see whether the logging option will provide more insight on what's wrong, e.g.
ovftool.exe --X:logFile=ovftool-log.txt --X:logLevel=verbose "vi://10.160.78.210/myvm" c:\temp\myvm.ova
Note that the diskMode option "-dm=thin" is only relevant for deploying an OVF file.
If this doesn't help, please attach the ovftool's log file, as well as the VM's configuration (.vmx) file to a reply post.
Thank you for this tip.
In looking through the logs it appears that the tool uses curl, and curl was having trouble with the https certificate my IT guy put on my server. He had used "localhost" as the CN, and it was self-signed. I installed a proper certificate, and export was successful.