Can any one help to reset the Authentication settings of Mercury Quality centre.
I logged in as administrator and chose authentication option as LDAP and did not import any user list.
I tried to re login to QC but login has failed due following error.

Failed to Login;
Failed while trying to locate user in LDAP server (missing LDAP import settings). Please contact the site administrator to resolve the problem.;
Application Parameter 'DIRECTORY_PROVIDER_IMPORT_URL' does not exist;

Now I am not in a position to revert the LDAP Authentication setting.
It will be great if any one can help on this.
Environment: windows XP and Mercury Quality centre 9.0