The wrong login method was selected for SQL Express
If you selected the wrong login method when installing SQL Express, you can change the GpSQL.ini so that the GP Manager can still connect to the database. This saves you having to reinstall Microsoft SQL Express.
To do this, change the INI file as follows:
[SQL] T_SERVER = server name T_USER = release T_PASSWD = release T_SECURITY = SSPI T_DATENBANK = GpBank