XenApp Platinum 6.0, Windows Server 2008 R2

PROBLEM

After installing XenApp you run Discovery and receive the following error message: “Errors occurred when using Servername in the discovery process.”

Double-clicking the error message to see the error details reveals the following:

“An unexpected error occurred. Check that the server name is correct, that the server is on, that Citrix Presentation Server is installed on this server, and that the Citrix MFCOM Service is running.”

RESOLUTION

I followed the instructions on the Citrix forum to Enable Network COM+ access, and tried to run the discovery process but again received the same error message.

I realized that XenApp had been installed on the system with a local admin account, but the server was recently joined to a domain. I then un-installed XenApp, rebooted the server, then re-installed XenApp using an admin account that was part of the domain. (Citrix recommends that if you un-install XenApp, that you do not install it again until you have a freshly imaged server. This was in a test environment so I ignored these instructions, but did not have any problem after re-installing). After installing XenApp with the domain administrator account I ran discovery again the process completed successfully.

Note: As I later learned, XenApp 6.0 differs from 5.0 in that you do not need to pre-install the Windows roles, the installation will take care of that for you. If you are installing XenApp 6.0 on Windows Server 2008 R2 for the first time, you should be able to run the Citrix installation with out pre-installing the roles as you would with 5.0

You are trying to allocate licenses for a Citrix XenApp (Presentation Server) Platinum 6.0 server, but are receiving the following error : Error on “License Server Name” field: Invalid HOST ID xxxx.

RESOLUTION

To resolve this issue you need to use the filter button so that only XenApp is displayed. The reason for this is because XenApp uses the hostname to allocate licenses, but the citrix WANScaler Client uses a hardware MAC address to allocate licenses, resulting in the error mentioned above.

Follow the steps below in order to work around this issue.

1. Log on to My Citrix.

2. Highlight Choose a toolbox and select Activation System/Manage Licenses from the list.

3. From the current tool dropdown list, select View Licenses.

4. Next to the unallocated license you wish to allocate, click on the link Click to allocate.

5. Follow the prompts to allocate the license.

6. When prompted to Select Licenses to Allocate, highlight one product, such as "XenApp Platinum" and click on Filter products. Only XenApp Platinum should be appearing now.

7. Enter the quantity to allocate, enter the Hostname of the license server and, at the bottom of the page, select Allocate.

8. Download the license file.

9. Repeat steps 1 through 8 for the remaining products.

Note: In case you own WANScaler hardware appliances, you must allocate the WANScaler Client licenses to the Host ID of your hardware appliance (you can find the Host ID on your WANScaler under system tools). In case, you do not own WANScaler hardware appliances yet, there is no need to allocate the WANScaler Client licenses.