Fix: The Connection to “” Failed with Status (Unknown Client Error 0) – Citrix

You may receive an error while trying to launch your Citrix Desktop from a remote connection.

Desktop Viewer

The connection to “” failed with status (Unknown client error 0).

If you recently upgraded Citrix Receiver from version 3 to 4, there is a legacy registry key that needs to be deleted which causes this error to occur.

Delete the following registry key as it’s no longer needed.

HKEY_CURRENT_USER\Software\CITRIX\Program Neighborhood Agent\Resource Cache (SZ)

*If this did not work for you, let us know by using the comment form below. If you have another solution, also let us know below.*