CompleteFTP's configuration file contains sensitive information such as password hashes and certificates. Accordingly, some filesystem security restrictions are applied to this file (typically C:\ProgramData\Enterprise Distributed Technologies\Complete FTP\config.db), and the associated backup directory (C:\ProgramData\Enterprise Distributed Technologies\Complete FTP\backup). Access is configured for Administrators, the default account for the CompleteFTP service (the local SYSTEM user) and the installer.
Users who have changed the Windows 'log on' user of the CompleteFTP service from the default (i.e. local SYSTEM user) may need to manually configure Windows file permissions after installation by giving full control of the configuration file and backup directory to the new log on user.
The new 'log on' user will also need to be granted permissions to read all subdirectories under C:\ProgramData\Enterprise Distributed Technologies\Complete FTP as well as write permissions to the Users and Logs subdirectories.