The File Extensions Database

.VMCZ File Extension

  • Developer by: Microsoft
  • Category: Compressed Files

What is an .VMCZ file?

.VMCZ is Hyper-V Compressed Virtual Machine

A VMCZ file contains a compressed virtual machine (VM) created by Microsoft Hyper-V, a Windows virtualization program. It stores the state, data, and hardware configuration of a VM at the time of the file creation in a Zip-compressed package. VMCZ files are exported by Hyper-V to share and copy virtual machines to other computers or servers.

Microsoft Hyper-V allows users to run multiple operating systems as virtual machines in Windows, as well as create and manage virtualized software and hardware components. Hyper-V software also comes with Hyper-V Manager, which is a tool that provides a friendly user interface (UI) for interacting with Hyper-V. Hyper-V Manager is available as an optional program built into Windows systems that support Hyper-V.

Microsoft introduced the VMCZ file type when it added the virtual machine export capability to Hyper-V Manager with the release of the Windows 10 Insider Build of 16226 in June 2017. The feature was introduced through the addition of a "Share" button to the UI of Hyper-V Manager that allows users to export a Hyper-V VM as a compressed VMCZ file.

The Share feature makes it easier for users to copy virtual machines and transport them to other locations. After moving a VMCZ file to another system with Hyper-V installed, a user can simply double-click the file to import it into Hyper-V.

Since a VMCZ file is a Zip-compressed package, a user can also manually extract the contents of the package with a Zip-decompression utility, such as Microsoft File Explorer, Corel WinZip, 7-Zip, or WinRAR. The contents typically include a VM hard disk drive .VHD or .VHDX file, a VM configuration .VMCX file, and a VM run state VMRS file.

To export a virtual machine in Hyper-V Manager as a VMCZ file, select the "Share" button in the toolbar or right-click a virtual machine, then select Export.

NOTE: Hyper-V was first released with Windows Server 2008 and has been made available for free beginning with Windows 8 and Windows Server 2012. It is available in 64-bit versions of Windows 10 Pro, Enterprise, and Education.

Programs that open Hyper-V Compressed Virtual Machine
Microsoft Hyper-V

How to solve problems with VMCZ files

  • Associate the VMCZ file extension with the correct application. On :
    Windows: Right click on any VMCZ file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.VMCZ files". Mac: Right click (or Ctrl-click) the VMCZ file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .VMCZ is Hyper-V Compressed Virtual Machine. Because only the current version supports the latest VMCZ file format. Search, therefore, e.g. on the Microsoft manufacturer website after an available .VMCZ is Hyper-V Compressed Virtual Machine update.
  • To make sure that your VMCZ file is not corrupted or virus-infected, get the file again and scan it with antivirus software.