By default vCenter Converter Standalone 6.4 supports only TLS 1.2 security protocol. If needed, you can enable the TLS 1.0 and TLS 1.1 protocols manually.


  1. Navigate to the %ProgramData%\VMware\VMware vCenter Converter Standalone directory.
  2. Open the converter-client.xml, converter-server.xml, converter-worker.xml, and converter-agent.xml files in a text editor.
    The converter-client.xml file is located in the %ProgramFiles(x86)%\VMware\VMware vCenter Converter Standalone folder.
  3. Change the value of the <sslOptions> tag for each of the files.
    1. Locate the <sslOptions> tag in the file and to enable the TLS 1.1 protocol, change value of the tag from 123422720 to 391858176.
      Note: If you change the value to 56313856, you enable the TLS 1.0, TLS 1.1, and TLS 1.2 security protocols.
    2. Save the changes to the file.
  4. Restart the Converter Standalone services for the changes to take effect.
    Note: If you install Converter Agent on a remote machine, you must repeat this procedure by using the converter-agent.xml file on the remote machine.