data folder contains the SSO Connect configuration files. At a minimum it should be backed up after initial configuration and each time the configuration is modified. In addition to the configuration files, there are data files in data that are modified at runtime but they will automatically be refreshed if they get out of sync with the Keeper server. Regular periodic backups can be used but are not necessary. The data folder on each SSO Connect instance needs to be backed up independently because not all of the configuration settings are shared among instances.data folder is under the SSO Connect install folder, typically $HOME/sso_connect/data.data folder is in C:\ProgramData\Keeper SSO Connect\data\ since v14.1. Prior to v14.1 it was in C:\Program Files\Keeper Security\SSO Connect\data\.data folder as described above, restore it before starting SSO Connect. If a data folder already exists (because you started SSO Connect), stop SSO Connect, remove all files in the data folder, copy the files from the backed-up data folder, and restart SSO Connect.data folder or if the backup is out-of-date you will need to configure the replacement instance as if it were a new installation. Please follow the steps in the Installation section.