Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.VMX
File Type
VMware Configuration File
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .vmx file format
The VMX file is a plain-text configuration file used by VMware virtualization products, such as VMware Workstation, VMware Player, and VMware Fusion. It serves as the primary blueprint for a virtual machine, storing critical settings that define the virtual hardware environment. This includes speci…
File extension
.VMX
File type
VMware Configuration File
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .vmx file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .vmx.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .vmx file?
File extension details and usage information
The VMX file is a plain-text configuration file used by VMware virtualization products, such as VMware Workstation, VMware Player, and VMware Fusion. It serves as the primary blueprint for a virtual machine, storing critical settings that define the virtual hardware environment. This includes specifications for the amount of allocated RAM, the number of virtual CPUs, the location of virtual hard disk files (VMDK), network adapter configurations, sound card settings, and display parameters. When a user launches a virtual machine, the VMware hypervisor reads the VMX file to initialize the virtual environment before booting the guest operating system. Because it is a text-based file, it can be manually edited by advanced users to tweak settings that might not be exposed through the graphical user interface, such as advanced power management or specific hardware compatibility flags. It is essential for the portability of virtual machines, as moving the VMX file along with the associated virtual disk files allows the virtual machine to be easily transferred between different host computers.
Software Compatibility
Programs that may open or work with .vmx files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
No specific software is listed for this platform yet. Try checking the file source, identifying the original application, or using a trusted universal file viewer when appropriate.
Can .vmx files be converted?
Options for saving or exporting this file to another format
In many cases, a .vmx file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .vmx file.
Why can't I open a .vmx file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .vmx format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .vmx files
To open a .vmx file, use software that supports this file format.
- VMware Workstation Pro
- VMware Workstation Player
- Notepad++
- VMware Fusion
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .vmx file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.