Delete NSF Security Setting - Version 3.5 To solve query such as how to delete NSF security settings, you must try Securase utility by SysTools group that allow you to open NSF database. Resolve query like: “File access is not authorized” or “you are not authorized to access that database” with NSF security remover software. Open NSF database tool helps you to remove local security from NSF files or erase NSF local security while showing “not authorized to perform that operation” error. Point to noted that Securase software is not a Lotus Notes password recovery tool as it just removes only local security from Lotus Notes database. You can download demo version of delete NSF security setting tool free of cost that allow you to remove local NSF security from sample NSF (protected) files. But if you want to delete local security from unlimited NSF files, you need to invest in full pro version of Securase tool.