What's the NFM File?

By:   |   Edited: November 26, 2018

Microsoft Silver

NFM File Summary

Our most recent information indicates that NFM files are associated with only a single known file type, the Delphi .NET Form File format, and can be viewed with the Delphi (IDE) software package (developed by Embarcadero Technologies). NFM files are categorized ordinarily as Developer Files.

File Extension NFM is supported by Windows, iOS, and Android operating systems. These types of files can be found on both desktop and mobile devices. With a Popularity Rating of "Low", these files are not very common to your average computer user.

Please see the detailed information below to learn more about NFM files and the programs that can open them. In addition, we provide simple troubleshooting information to help you open your NFM file.

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Types of NFM Files


Leading NFM Type

.NFM
File Ext:.nfm
Group:Delphi .NET Form File

A developer file made using Delphi Windows development software. It stores a visual file which can be compiled into an app which runs on Microsoft's .NET Framework.

Programmer: Embarcadero Technologies
Kind:Developer Files
Folder: HKEY_CLASSES_ROOT\.nfm

Software Programs That Open The Delphi .NET Form File:


Delphi (IDE) by Embarcadero Technologies

Windows
iOS
Android
OS X El Capitan

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NFM Usage


OS Ranking

Windows (82.33%)
Android (11.56%)
iOS (3.43%)
Macintosh (1.71%)
Linux (0.60%)


Troubleshoot NFM Files


Common NFM Opening Problems

Delphi (IDE) Removed

Double-clicking your NFM file prompts the message "%%os%% Can't Open NFM File". Usually, this is because you do not have Delphi (IDE) for %%os%% installed. This will prevent you from double-clicking to open the NFM file because the OS doesn’t know how to handle it.


Tip: When you have another program installed that you know will open your NFM, you can select it from the other programs listed (see "Show Apps").


Obsolete Version of Delphi (IDE)

In other instances, your Delphi .NET Form File file version may not be supported by your version of Delphi (IDE). Visit the Embarcadero Technologies website to download (or purchase) the latest version of Delphi (IDE). This problem is predominately due to having a Delphi .NET Form File file version that was created by a newer version of Delphi (IDE) than what you have installed on your PC.


Tip: Find clues on the correct software version by right-clicking your NFM file and clicking "Properties".


Summary: In either case, the majority of problems opening NFM files are related to not having the correct software application installed on your computer.


Additional NFM Opening Issues

In the majority of cases, installing the right version of Delphi (IDE) will resolve your issue. If you're still experiencing problems opening NFM files, there could be other computer problems. Problems unrelated to software:

  • NFM file type Registry entries are wrong
  • The NFM file description within the Windows Registry was removed
  • Incomplete or bad installation of a software application associated with the NFM format
  • Your NFM can't be loaded properly (file corruption)
  • Your NFM is infected with malware
  • NFM-related hardware has device drivers that obsolete
  • Insufficient system resources to successfully open Delphi .NET Form File files

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