When trying to manage users in a self-hosted Act! database, the message "The users of this database are managed by Single Sign-On." is displayed.
This message will appear if the database has previously been hosted on our Act! Cloud platform, where users are managed via our Single Sign On portal.
If the database is then migrated back to a desktop install, the database will still be configured to manage users in this way.
To resolve this, we've created a batch file which can be run to reconfigure the database back to "desktop" user management. Simply download the file attached to this article, and run with appropriate administrator permissions.
Type in the name of the affected database and press the Enter key.
This will disable the Single Sign On user management features, and allow users to be managed from the Tools > Manage Users... menu.