Citrix Access Gateway - There are no common encryption algorithms

I had problems after building a new Netscaler 9.2 VPX and setting up Access Gateway.

Internet Explorer Simply refused to show any access gateway landing page
My Iphone and IPad showed the Access Gateway logon screen correctly
I was getting the following error message in firefox when browsing to my Access Gateway site.

"There are no common encryption algorithm"
 
 I found some stuff on the web about TLS v3 , SSL Ciphers etc.. but my solution was far more simple.

I had rebuilt the Netscaler and re-applied the same Licence file. This was a mistake as the licence file is connected to a Host ID (like a MAC) address of the device and not its device name.

I basically applied for a new licence file through MYCITRIX.COM and entered in the new Host ID address of the netscaler and applied the new licence and its now working as expected.

To view the Host ID address of the Netscaler go through the CLI and enter

Shell
lmutil lmhostid –ether

This will display the MAC ID of the device. This is what you need to put into the Licence file request on the MyCitrix.com website.

Full details on the licencing process are in CTX121062