After installing 8.1 I could no longer use my installed version of the Citrix Receiver so I went out and downloaded the latest version from Citrix.com - When I attempted to install it bombed saying it was incompatible with the installed version. I uninstalled the existing, rebooted and then was able to get the install to finish. NOW however, I am getting "Certificate provided by the server is not trusted. Account information cannot be added". Thinking this was cert related I went to our Citrix address in Firefox and saved and exported the cert. Then I fired up the cert management via IE and imported to my personal store, rebooted and still no joy.  Perhaps I need to import the cert into a different store???

Hi,

Based on my research, it is not compatible. You can contact Citrix Support to get more insights.

http://www.citrix.com/support.html