If you are having issues connection to a Citrix XenDe3sktop XenDesktop machine and getting errors such as the following, try following these steps to insure you are running on the latest version of Citrix Workspace. Citrix Workspace has replaced the previous Citrix Receiver as the Citrix XenDesktop remote client software.
...
Open a browser and and go to https://remote.mueller-inc.com
Login using your credentials
Click on the Gear (top right) and then select Account Settings
Click on Install Citrix Receiver
Click on Detect Receiver
If you get a pop-up as shown below, click Cancel
Then select the I agree checkbox, and then click Download
Once downloaded, simply run the file that was downloaded.
NOTE: You may see something about a secure download, just click Keep (it is actually secure)You may see a message about your active sessions, Just click “Yes”
...