Disabling SSL encryption on VMware Converter Standalone 5.x to increase cloning performance

When you perform a P2V of a physical server to a virtual server the performance is not to great. It could be a lot better when you turn of the SSL encryption.

This post is a note to myself. Turn of SSL encryption when doing a P2V and you don’t want to wait a long time 🙂

Source: VMware KB2020517


By default, the VMware vCenter Converter Standalone 5.0 default the converter worker encrypts the data stream using SSL. Encrypting the traffic increases security, but it can decrease performance.

This article provides steps to disable SSL encryption in VMware vCenter Converter Standalone 5.0.


To disable SSL encryption for the converter worker:

  1. Locate the converter-worker.xml file. By default, it is located at:
    • Windows 7 and 2008 Server – C:\ProgramData\VMware\VMware vCenter Converter Standalone
    • Windows Vista, XP and 2003 Server – %ALLUSERSPROFILE%\VMware\VMware vCenter Converter Standalone
    • In older Windows versions – %ALLUSERSPROFILE%\Application Data\VMware\VMware vCenter Converter Standalone
  2. Take a backup of the converter-worker.xml file.
  3. Open the file in a text editor and locate the tag pair <useSsl></useSsl>. It is located inside the <nfc> tag and has a value of true.
  4. Change the value to false.
  5. Save and close the file.
  6. Restart the VMware vCenter Converter Standalone Worker service on the machine.

VMware has also created a Youtube movie.

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The information in this article is provided “AS IS” with no warranties, and confers no rights. This article does not represent the thoughts, intentions, plans or strategies of my employer. It is solely my opinion.


Marco works for ViaData as a Senior Technical Consultant. He has over 15 years experience as a system engineer and consultant, specialized in virtualization. VMware VCP4, VCP5-DC & VCP5-DT. VMware vExpert 2013, 2014,2015 & 2016. Microsoft MCSE & MCITP Enterprise Administrator. Veeam VMSP, VMTSP & VMCE.