How to Open .nsf file in Lotus Notes - Version 3.5 If you want a finer utility to learn how to open .nsf file in Lotus Notes? So Securase software is the best which can help to open notes .nsf files locally. Using this utility user can open Notes .NSF files and allows to open/read/view/ and modify NSF files. You can try our freeware NSF Opener tool which helps you to analysis the software performance and functionalities. Notes local security remover is one of the best utility for removing local NSF security and allows users to access protected Lotus Notes file. You are not authorized to access that database - solve query using NSF Opener software that helps users to change restricted NSF files to unrestricted NSF files easily and instantly.Download free product display edition that allows you to open Notes .NSF files however you will open NSF files only in the sample pages. You need to purchase full licensed version of Securase software for opening an NSF file without any issues. For