Error: "Your apps are not available at this time. Please try again" When Receiver Connects Through NetScaler Gateway

The following error is displayed when Windows Receiver connects through NetScaler Gateway:
"Your apps are not available at this time. Please try again in a few minutes or contact your helpdesk with this information: Cannot contact STORENAME"

When bypassing the NetScaler, Receiver connects to the farm.

Solution 1

To resolve this issue change the beacon entries in StoreFront. Add the NetScaler Gateway addresses to external beacon.

If you want to use ICA proxy from internal and external connections (all clients should only go through NetScaler),?? then add a fake address in the internal beacon of StoreFront.
Note: The internal beacon should only be resolvable inside the network, if the beacon is resolvable externally then Citrix Receiver will not be able to add the account.

Solution 2

The issue relates to compatibility of Receiver 4.x and Web Interface XenApp services site.?? Receiver 4.x supports services sites but when connecting thru NS, users may experience issues as described in CTX136828 -??Error When Using Windows Receiver PNAgent through Access Gateway Enterprise Edition Appliance.

Also note Citrix edocs, "NetScaler to Web Interface XenApp Services site" is not supported, ref: http://docs.citrix.com/en-us/receiver/windows/4-3/receiver-windows-sys-reqs-43.html