NSF file format description

Many people share .nsf files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .nsf file can be edited, converted or printed with. On this page, we try to provide assistance for handling .nsf files.

3 filename extension(s) found in our database.

.nsf - Lotus Notes Data

The NSF data files are related to Lotus Notes. NSF file is a Lotus Notes data file. Lotus Notes is the "classic" client for accessing the Domino/Notes server and processing e-mail, appointments, contacts and much more.

Application:

Lotus Notes

Category:

Data files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

Lotus Notes Data related extensions:

.wkl: WaKan Word List Data
.ayt: Ayat Data
.wqs: WebQuest Surfer Data
.pdx: Product Data eXchange File
.schdoc: Altium Designer Schematic File
.pcbdoc: Altium PCB Document

.nsf - NES Audio Data

The NSF audio files are related to NES. NSF file is a NES Audio Data. The Nintendo Entertainment System (NES) is an 8-bit third-generation home video game console produced by Nintendo. NSF (Nintendo Sound Format) files contain music playback programs extracted from Nintendo Entertainment System (NES) games.

Application:

NES

Category:

Audio files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

NES Audio Data related extensions:

.efk: Ensoniq KT Audio Data
.esps: ESPS Sampled Data
.usflib: Nintendo 64 Song Library
.usf: Nintendo 64 Song
.mws: IBM MWave DSP Synth Instrument Extract
.aero: Aero Studio Song

.nsf - Noptel NOS Setup Data

The NSF data files are related to Noptel NOS. NSF file is a Noptel NOS Setup Data. Noptel NOS is a shooting training application for Noptel RangeTrainer optical unit.

Application:

Noptel NOS

Category:

Data files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

Noptel NOS Setup Data related extensions:

.arcinfo: ESRI ArcInfo Data
.ldb: Microsoft Access Database Lock
.hbk: HandyCafe Data
.fpk: PerFORM Packet Data
.ccf: Cumulus Catalog Data
.bqy: BrioQuery Data

Naturally, other applications may also use the .nsf file extension. Even harmful programs can create .nsf files. Be especially cautious with .nsf files coming from an unknown source!

Can't open a .nsf file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:

example.nsf

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Open Control Panel > Control Panel Home > Default Programs > Set Associations.
Select a file type in the list and click Change Program.

The .nsf file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

bsf, gsf, hsf, jsf, msf, ncf, nef, nf, nfs, nqf, ns, nsb, nsc, nsd, nse

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.bsf: Blu-ray AVC Video
.bsf: Altera Quartus II Block Symbol File
.sf: Digital Signature
.nsd: Nero Super VideoCD Compilation
.ns: netCDF Data
.gsf: GEMPAK Map File

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

https://datatypes.net/open-nsf-files

If you have useful information about the .nsf file format, then write to us!

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