Licences for previous versions of Dekho are not compatible with Dekho 3.1 and will be removed in the upgrade process. Single sign-on requires a new Dekho 3.1 licence, but you will not be able to access the Dekho Manager and install the licence if you have single sign-on enabled.
Prior to upgrade In the Dekho Manager, open the settings and set the ‘authentication’ setting to ‘Anonymous authentication’. Also set the ‘authorisation’ setting to ‘Dekho Roles’.
You can re-enable single sign-on once the upgrade process is complete and the new Dekho 3.1 licence has been installed.