Could not establish connection to server- CentOS linux virtual desktop from Windows 8 client

Unable to connect the CentOS 6 virtual desktop via vWorkspace.

Getting "Could not establish connection to server" error.

XRDP installed correctly as I can successfully RDP using RDP client from a Windows 8 client.

Enabled logging on the connection broker,

0 NCSDSK01.LAB.REDARMOUR.CO.UK 10.20.1.181 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 CentOS %systemroot%\explorer.exe 1 0 1 1 1 2 1

2013-09-23 22:33:10.510 - 748 - 11032 - Broker - INFO - ### Accepted collection message...

2013-09-23 22:33:10.510 - 748 - 11032 - Broker - INFO - Heartbeat: NCSDSK01.lab.redarmour.co.uk(10.20.1.181)

2013-09-23 22:33:10.510 - 748 - 11032 - Broker - DEBUG - CDbManager:reusing conn=0x053f2510 (50)

2013-09-23 22:33:10.510 - 748 - 11032 - Broker - INFO - Getting the remote computer state...

2013-09-23 22:33:10.526 - 748 - 11032 - Broker - DEBUG - CDbManager:keeping conn=0x053f2510 (50, lastCount=49)

2013-09-23 22:33:10.526 - 748 - 11032 - Broker - INFO - CDbManager:connection held 17 ms

2013-09-23 22:33:10.526 - 748 - 11032 - Broker - INFO - ### Finished collection message (msec=17)

2013-09-23 22:33:11.509 - 748 - 11032 - Broker - INFO - ### Accepted collection message...

DNS resolves the VM just fine and the connection broker reads that the VM is logged off and online. Virtual desktop Extensions installed and service running successfully.

CentOS VM is joined to active directory domain.

/var/log/messages logs all connection broker messages successful

Any idea ?