Were you able to complete the plugin registration (including retrieving the thumbprint from the server)?  Please perform the following steps to clean your setup and perform the registration (using the ps1 script) again. Where are you running the PowerCLI session from? does this host have by-directional communication with the VC?  How to clean-up your Env and perform clean install (while using previously defined networks):  ~ # esxcli system module parameters set -m scini -p "" ~ # esxcli software vib remove -n scaleio-sdc-esx5.5 / 6.0     15.  If needed: Reboot all ESXs that SDC was removed from  **Paths per VC version and OS ** VC 5.5 Windows: Virgo logs: C:\ProgramData\VMware\vSphere Web Client\serviceability\logs Plugin logs and other files: C:\Windows\System32\config\systemprofile\AppData\Roaming\VMware\scaleio Plugin location C:\ProgramData\VMware\vSphere Web Client\vc-packages\vsphere-client-serenity  Linux:  Virgo logs: /var/log/vmware/vsphere-client/ Plugin logs and other files: /opt/.vmware/scaleio Plugin location /var/lib/vmware/vsphere-client/vc-packages/vsphere-client-serenity/  VC 6.0 Windows: Virgo logs: C:\ProgramData\VMWare\vCenterServer\logs\vsphere-client\logs Plugin logs and other files: C:\Users\vspherewebclientsvc\AppData\Roaming\VMware\scaleio Plugin location C:\ProgramData\VMware\vCenterServer\cfg\vsphere-client\vc-packages\vsphere-client-serenity  Linux: Virgo logs: /var/log/vmware/vsphere-client/logs Plugin logs and other files: /etc/vmware/vsphere-client/vc-packages/scaleio Plugin location: /etc/vmware/vsphere-client/vc-packages/vsphere-client-serenity
I am running the setup script as instructed on a Windows host (in this case the DC, the only running Windows host in the environment) for the vCenter ScaleIO plugin. My vCenter server is the VCSA (5.5.x) however the script fails to connect to the internal server so its not even making the connection to vCenter anyways.  I thought maybe running on a DC was causing a problem so I spun up a new windows box which the script ran on the first time, however the icon did not appear in the web client. I removed the plugin using the script but now subsequent attempts to install it are also failing to retrieve the thumbprint.  Using Java 1.8_60, set JAVA_HOME to C:\jre8\bin. Also tried with JRE7 (C:\Program Files\Java\jre7\bin)  Nothing seemingly in the logs that indicate an error; other than mdm IP missing, but I'm just installing the plugin so I wouldn't expect that to exist at this point? Anyways ECN says I can't attach txt files so let me know if you want it pasted in.  It's a flat lab network, no routing, everything on the same subnet. ipconfig C:\Users\Administrator>ipconfig /all Windows IP Configuration    Host Name . . . . . . . . . . . . : vxprt-dc01    Primary Dns Suffix  . . . . . . . : vxprt.local    Node Type . . . . . . . . . . . . : Hybrid    IP Routing Enabled. . . . . . . . : No    WINS Proxy Enabled. . . . . . . . : No    DNS Suffix Search List. . . . . . : vxprt.local  Ethernet adapter Ethernet0:    Connection-specific DNS Suffix  . :    Description . . . . . . . . . . . : Intel(R) 82574L Gigabit Network Connection    Physical Address. . . . . . . . . : 00-0C-29-5E-D6-D0    DHCP Enabled. . . . . . . . . . . : No    Autoconfiguration Enabled . . . . : Yes    Link-local IPv6 Address . . . . . : fe80::806b:bf95:dce0:f1f1%13(Preferred)    IPv4 Address. . . . . . . . . . . : 192.168.6.5(Preferred)    Subnet Mask . . . . . . . . . . . : 255.255.255.0    Default Gateway . . . . . . . . . : 192.168.6.2    DHCPv6 IAID . . . . . . . . . . . : 268438569    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1B-E5-8C-0A-00-0C-29-5E-D6-D0    DNS Servers . . . . . . . . . . . : ::1                                        127.0.0.1    NetBIOS over Tcpip. . . . . . . . : Enabled  Tunnel adapter Local Area Connection* 11:    Media State . . . . . . . . . . . : Media disconnected    Connection-specific DNS Suffix  . :    Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0    DHCP Enabled. . . . . . . . . . . : No    Autoconfiguration Enabled . . . . : Yes  Tunnel adapter isatap.{C9E88096-77FC-4405-A762-B4EEBDC92747}:    Media State . . . . . . . . . . . : Media disconnected    Connection-specific DNS Suffix  . :    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0    DHCP Enabled. . . . . . . . . . . : No    Autoconfiguration Enabled . . . . : Yes  C:\Users\Administrator>  Last entries from the scaleio log file
ScaleIOPluginSetup-1.32-403.2 "WARNING: Failed retrieving thumbprint from the 
server"