If you're using Desktop Central, refer to this document to resolve this issue.
You are trying to download Citrix Workspace patches and the download fails.
This might be due to some issue in the session keys and hash keys of the download link.
Follow the steps given below to resolve this issue:
If you have changed the location of the patch store, then navigate to the path mentioned in the registry value which has been highlighted in the screenshot below:
If the issue persists even after following the above-mentioned resolutions, please feel free to contact Support.