[ https://issues.jboss.org/browse/JBDS-3722?page=com.atlassian.jira.plugin.... ] Len DiMaggio commented on JBDS-3722: ------------------------------------ The install log is showing this: Mon, 28 Mar 2016 17:37:00 GMT-INFO: Download finished for: virtualbox Mon, 28 Mar 2016 17:37:00 GMT-INFO: Install started for: virtualbox Mon, 28 Mar 2016 17:37:00 GMT-INFO: virtualbox - Execute C:\Users\jbossqa\AppData\Local\Temp\virtualbox.exe --extract,-path,C:\Users\jbossqa\AppData\Local\Temp,--silent Mon, 28 Mar 2016 17:37:05 GMT-ERROR: virtualbox failed to install: Error: spawn UNKNOWN In trying to run the downloaded virtualbox.exe binary, I am seeing this: C:\Users\jbossqa\AppData\Local\Temp>C:\Users\jbossqa\AppData\Local\Temp\virtualbox.exe --extract,-path,C:\Users\jbossqa\AppData\Local\Temp This version of C:\Users\jbossqa\AppData\Local\Temp\virtualbox.exe is not compatible with the version of Windows you're running. Check your computer's system information and then contact the software publisher. An error dialog indicates that virtualbox.exe is not compatible with Windows10 - which is the version of Windows that I am running. The filesize for the virtualbox.exe that the installer downloaded is: 167,026,688 virtualbox.exe The filesize for the virtualbox binary that the installer's requirements.json file points to (developers.redhat.com/redirect/to/virtualbox-5.0.8.download) is: 117,095,112 VirtualBox-5.0.8-103449-Win.exe Summary - The installer is downloading the WRONG virtualbox binary. -- This message was sent by Atlassian JIRA (v6.4.11#64026)