Known System Issues
The error message: Citrix online plug-in Configuration Manager: No value could be found for (ClientHostedApps) that satisfies all lock down requirements. The lockdown requirements in force may be conflicting. [#261877]
As a workaround, set the following registry key:
HKEY_CURRENT_USER\Software\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Control
Name: ClientHostedApps
Value: FALSE (or set to * / TRUE if you have overridden the defaults in HKEY_LOCAL_MACHINE)