When you look in the management console to the hotfix details of all servers, you can notice that a server is displaying the wrong “product version” 6.5.6682, also the “hotfix count” is 0.
Install the following hotfix on the servers that have the management console: http://support.citrix.com/article/CTX132713
After you installed the hotfix run the following command line on the server having the problem:
Net stop IMASERVICE
DSMAINT recreateLHC
The local Host Cache is recreated and when running a discovery from AppCenter the product version is displayed correctly.
When the “product version” is still wrong run the command again on the zone master, which can be found running the following command:
Qfarm /zone