File Extension REG

.REG File

File extension: REG
File type: Registry Data File


Notes about the REG file extension:



Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.

The REG file type is primarily associated with 'Registry Data File' by Microsoft Corporation. Typically used to make repairs to or save data from the Windows registry. Use, with caution, the Windows Registry Editor to create a .REG file. All you have to do is "run" the file (double click on it) in order to insert the values into the registry. Do this with even more caution! Changing the registry improperly can result in your system no longer working. Note: This file type can become infected and should be carefully scanned if someone sends you a file with this extension.

Detailed information for file extension REG:


Primary association: Registry Data File
Company: Microsoft Corporation
Identifying characters Hex: 52 45 47 45 44 49 54 , ASCII: REGEDIT
Related links: Registry Guide for Windows, Windows registry Information for Advanced Users, Wikipedia Registry Page

Other applications associated with file type REG:

  • Mozilla (Netscape) (XPCOM Registry) by Mozilla.orgFile: COMPONENT.REG. Files where Mozilla keeps track of its components.
  • Registration Data
  • Unknown Apple II File ((found on Golden Orchard Apple II CD Rom))
File Identifier - TrID
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database




Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.

Technical data

To view technical data on file-extension REG click this link to expand/hide the additional area.

System Info for File Extension .REG

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: Regedit.Document, FileType: Regedit Document

ProgramID: regfile, FileType: Registration Entries, AppName: Notepad
EXEFile: NOTEPAD.EXE

ProgramID: regfile, FileType: Registration Entries, AppName: Registry Editor
EXEFile: regedit.exe

ProgramID: regfile
EXEFile: regedit.exe %1

ProgramID: regfile
EXEFile: regedit.exe %*


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