What is an AVHD file?
A .AVHD file is a Hyper-V SnapShot File created by Microsoft. It acts as a differencing virtual hard disk. When you create a snapshot of a virtual machine in Microsoft Hyper-V, the system creates a .AVHD file. This file stores all new data and changes made after the snapshot. The original virtual disk remains unchanged.
How to open AVHD files?
To open a .AVHD file, you need virtualization software. The standard tool is Microsoft Hyper-V Manager. You can also inspect the file contents by mounting it via Windows Disk Management or by using archive utilities like 7-Zip. Advanced users can manipulate these files using the PowerShell command-line interface.
Best practices and troubleshooting
Do not delete a .AVHD file manually from your file system. This will break your virtual machine. Always use the Hyper-V Manager to delete or merge snapshots. Merging snapshots combines the .AVHD data with the main virtual disk. If you experience disk space issues, remember that differencing disks grow over time as new changes occur.
Identify and inspect with viewer.online
viewer.online/avhd can analyze .AVHD files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available. Because file formats can share extensions, we recommend using viewer.online/avhd to identify the actual format of your file.
Summary
viewer.online/avhd is useful for identifying, inspecting, and understanding .AVHD files without installing software or dealing with compatibility problems.