Computer Configuration > Administrative Templates > Citrix Components > Citrix Workspace
Machine
HKLM\Software\Policies\Citrix\ICA Client\PersistentICA
Persistent ICA for relaunching sessions. When this policy is enabled then on closing or during launch failure of session or application which is configured, it retriggers the launch. In case of launch failure, maximum number of retries will be based on the configured value in the policy.