Description :The upgrade of an existing DUAS is not possible because the wizard do not detect the existing DUAS installation. So the upgrade is impossible because only the installation of a new instance is proposed by the wizard.
Cause type: Configuration Root Cause: The existing DUAS installation on the server is not detected because the registry key is not present (or is corrupted) in the windows registry. In fact, for each duas installed on a windows server the installation registration keys of the DUAS must be present in :
The installation registry keys of the duas must be added in the windows registry either manually (check with the system ADMIN) either they can be recreated with the script "unireginst.cmd" in the binary directory BIN. When this operation is completed, the DUAS installation can be upgraded.