.ADMX

Group Policy Administrative Template XML

Learn about .admx files - Group Policy Administrative Template XML. Find software to open, compatibility information, and alternatives.

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.ADMX
Group Policy Administrative Template XML

What is a .admx file?

File Extension Details

The ADMX file extension represents a Group Policy Administrative Template file used by Microsoft Windows operating systems. Introduced in Windows Vista and Windows Server 2008, ADMX files replaced the older, proprietary ADM file format. These files are XML-based and are used by system administrators to define registry-based policy settings in a centralized manner. ADMX files describe the user interface for the settings that administrators see in the Group Policy Object Editor, mapping those UI choices to specific registry keys and values. Unlike ADM files, ADMX files are language-neutral, meaning they separate the core configuration logic from the localized display strings, which are stored in companion ADML files. This separation allows for easier multi-language support in enterprise environments. ADMX files are typically stored in the PolicyDefinitions folder on a local machine or within the SYSVOL share on an Active Directory domain controller to establish a Central Store, ensuring all administrators use the same policy templates.

Software Compatibility

Programs that can open and work with .admx files

Windows

Compatible Applications

Local Group Policy Editor (gpedit.msc) Compatible
Group Policy Management Console (GPMC) Compatible
Notepad++ Compatible
Visual Studio Code Compatible
Microsoft XML Notepad Compatible

macOS

Compatible Applications

Visual Studio Code Compatible
Sublime Text Compatible
BBEdit Compatible

Linux

Compatible Applications

Visual Studio Code Compatible
Sublime Text Compatible
Vim Compatible

Mobile

Mobile Applications

QuickEdit Text Editor Compatible
Textastic Compatible

Frequently Asked Questions

About .admx files

To open a .admx file, you need compatible software. Here are some options:

  • Local Group Policy Editor (gpedit.msc)
  • Group Policy Management Console (GPMC)
  • Visual Studio Code
  • QuickEdit Text Editor

To convert a .admx file to another format, you can:

  1. Use compatible software Many programs that open .admx files also allow you to save or export them to different formats.
  2. Try online conversion services: Websites like Zamzar, CloudConvert, or Online-Convert allow you to convert files between different formats without installing software.
  3. Specialized conversion tools: Search for '.admx converter' to find tools specifically designed for this file type.

  1. Verify the file extension is correct:
  2. Update your software:
  3. Try alternative software:
  4. Check for file corruption:

Like any file type, .admx files can be safe or potentially risky depending on their source:

  • Always scan files with antivirus software before opening
  • Keep your operating system and applications updated.
  • Be especially cautious with executable file types

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