For Receiver 3.1 and later, Only secure (HTTPS) stores are allowed by default. If you have only unsecure stores, here is how you can bypass this limitation.
Note: Citrix recommends using HTTPS in production environments.
Open registry editor and navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\Dazzle
Navigate to:
HKLM\Software\Wow6432Node\Citrix\AuthManager
Exit and restart Receiver.
Value explanations: