autoplay

.autoplayAutoplay Configuration File

Microsoft · 1990s

Developer
Microsoft
Category
System Files
MIME Type
application/x-autoplay
First Released
1990s
Open Format
No
File Signature
N/A
At a Glance
.autoplay
Autoplay Configuration File

An AUTOPLAY file is a Windows configuration file that tells the operating system what to do when you insert media like CDs or USB drives.

Reviewed on July 15, 2026
Compression
Plain text
Transparency
N/A
Editability
High
Best for
Windows AutoPlay configuration

Key Features

  • Automates media handling on Windows.
  • Configurable by users and administrators.
  • Supports various media types (CD, DVD, USB).
  • Allows launching applications or playing media.

Best For

  • Defining default behaviors for removable media on Windows.
  • Streamlining user interaction with inserted discs or drives.
  • System administrators wanting to enforce specific media handling policies.

Less Ideal For

  • Cross-platform media handling automation.
  • Complex application configurations.
  • Defining system-wide security policies beyond media handling.
  • Users who prefer manual control over all actions.

Common Use Cases

  • Automatically playing a music CD when inserted.
  • Launching an installer from a software DVD.
  • Opening a photo album from a USB drive.
  • Configuring specific actions for game discs.

How to Open It

  1. AUTOPLAY files are not typically opened directly by users for viewing content.
  2. They are read by the Windows operating system itself to configure AutoPlay settings.
  3. To modify these settings, navigate to the 'AutoPlay' section in Windows Control Panel or Settings.
  4. Users can change default actions for different media types here, effectively editing the behavior defined by these files.

What is a .autoplay file?

An AUTOPLAY file is a configuration file used primarily by Microsoft Windows to control how it handles the insertion of different types of media, such as CDs, DVDs, or USB drives. It allows users or system administrators to define specific actions to be performed automatically when a particular type of media is detected. This includes launching applications, playing media files, or opening folders. These files enable a more streamlined user experience by automating common tasks associated with removable media.

Programs That Open .autoplay Files

PlatformProgram
WindowsWindows File Explorer / Control PanelFreeOfficial

Common Problems with .autoplay Files

⚠️ AutoPlay not working as expected.
Check the .autoplay file's directives and ensure the correct applications are installed and registered. Verify AutoPlay settings in the Windows Control Panel.
⚠️ Unwanted application launching on media insertion.
Edit the AutoPlay settings in Windows to disable or change the default action for the specific media type.

Frequently Asked Questions

Can I edit an .autoplay file directly?

While technically possible with a text editor, it's generally safer and easier to modify AutoPlay settings through the Windows Control Panel or Settings app.

Are .autoplay files used on macOS or Linux?

No, .autoplay files are specific to Microsoft Windows and are not used on other operating systems.

Is the .autoplay file a security risk?

Like any configuration file, a malicious .autoplay file could potentially be crafted to launch harmful software. Always ensure you obtain media from trusted sources.

Technical Details

AUTOPLAY files are plain text files that follow a specific INI-like structure. They contain sections and key-value pairs that define actions based on media type and content. The system parses these directives to determine which program to execute or which default action to perform, often utilizing registered handlers for different media types.

Did You Know?

The AutoPlay feature was introduced to simplify the user experience with removable media.
The behavior defined in .autoplay files can be overridden by user preferences set in the Control Panel.

Security Information

Be cautious when receiving media from unknown sources, as a specially crafted .autoplay file could be used to initiate unwanted actions or execute malicious code when the media is inserted into a Windows system.