If you are deploying XenDesktop 7.x and publishing both Windows 7 VMs and applications from a “XenApp” server, the Citrix Receiver installed on the Windows 7 VM will overwrite FTAs (File Type Associations) with those FTAs from published applications.  Normally this is not an issue, but it could be if you install say, Office on your Windows 7 VM and also publish Office for other users.  Receiver on the Windows 7 VM will launch the published applications rather than launching the locally installed instance of the Office suite.

To disable FTAs when using Citrix StoreFront, follow the steps below which can also be found here:

By default, file type association is enabled in stores so that content is seamlessly redirected to users’ subscribed applications when they open local files of the appropriate types. To disable file type association, you edit the store configuration file.

Important: In multiple server deployments, use only one server at a time to make changes to the configuration of the server group. Ensure that the Citrix StoreFront management console is not running on any of the other servers in the deployment. Once complete, propagate your configuration changes to the server group so that the other servers in the deployment are updated.

  1. Use a text editor to open the web.config file for the store, which is typically located in the C:\inetpub\wwwroot\Citrix\storename\ directory, wherestorename is the name specified for the store when it was created.
  2. Locate the following element in the file.

<farmset … enableFileTypeAssociation=”on” … >

  1. Change the value of the enableFileTypeAssociation attribute to off to disable file type association for the store.