Desktop Viewer toolbar does not show up in session using Web Interface

The black Desktop Viewer toolbar does not show up in the XenApp or XenDesktop ICA session of the user...

Unable to access HDX apps from XenApp. Error "HdxSdkErrorDomain_Session error 8."

Unable to access the XA application. Error on the device : iPhone: "HdxSdkErrorDomainSession error 8." iPad: "The session launch ended; either the session was not visible to the user, or the ICA engine did not load properly"...

Unable to Disable Workspace Control on StoreFront and XenApp 7.6

Unable to disable workspace control on StoreFront and XenApp 7.6.New apps launched from other devices are pulling the session from the previous sessions and instead of creating a new session.After disabling workspacecontrol on StoreFront is still enabled...