You are trying to publish the patches of Citrix Workspace App and you get the error : "Patch Download Failure".
Patch publishing of Citrix Workspace App will fail from Patch Connect Plus to WSUS due to some issue in the session keys and hash keys of the download link.
Follow the steps given below to publish Citrix Workspace updates to SCCM via Patch Connect Plus,
In case if this problem continues, kindly Contact Support
Keywords: Citrix Workspace & patch download failure