Receiver 12.9 for Mac product software. Mac OS 10.11, 10.12. A new security certificate was recently released to further enhance the security of Citrix Receiver. Citrix web access for MAC. Install the Mac Receiver Client 11.4 and enter the URL for the Citrix web interface server in a web browser. MAC 11.4.3 client is.

Installed Citrix Receiver 11.4.3 on Macbook Pro with OS 10.7.3.
Attempting to connect to Xenapp 6 farm with Web Interface/Secure Gateway configured for both WI and XML Services sites. Either method through Receiver results in 'Unable to connect' message. Have tried both automatic and manual configuration of Receiver.
If I just use Safari and open the same URL to the Web Interface site (https://myserver.mydomain.com), I can connect, log in and run applications.
There isn't much to configure here, since there is no CAG involved - so it's just a URL and description.
Does anyone have this working?
What else needs to be configured and where do you do that?
TIA
Rick

Citrix Receiver For Mac 12.6

We are currently having an issue with connecting to our XenApp applications with Citrix Receiver for Mac version 11.4.3. Half of the time it will allow you to connect to an app and half of the time it gives you the following error.
'The application '<appname>' is currently unavailable.'
It is not always the same app. Sometimes you can get it to connect by exiting the receiver and login back in. Other times you have to remove the app from the applications and re-added from the Virtual Apps Explorer.
If we uninstall the receiver and run the web client there seems to be no issues. We are running Lion. We have two farms that we connect to. One running XenApp 5 and the other running XenApp 6. Like I said everything runs fine using the web client.
I attached a screenshot of the error.
Thanks in advance!