OpenAnyFile
Works
Viewing, inspecting and verifying. You get a browsable listing of everything inside, decompressed in-browser by libarchive compiled to WebAssembly. File details, exact byte size and the detected signature are always shown.
How to open a .vhdx file
The short version: VHDX is a Hyper-V Virtual Hard Disk v2 from Microsoft. The longer version — including the quirk that trips most people up — is below, along with a viewer that runs entirely on your own device.
What is a .vhdx file?
Hyper-V Virtual Hard Disk v2 is an archive format developed by Microsoft, first appearing in 2012. It is normally produced by Hyper-V, Windows Server.
Raises the limit to 64 TB and adds a log for crash consistency, which VHD lacked entirely.
| Full name | Hyper-V Virtual Hard Disk v2 |
|---|---|
| File category | Archives |
| MIME type | application/x-vhdx |
| Magic bytes (file signature) | 76 68 64 78 66 69 6C 65 |
| Developer | Microsoft |
| Introduced | 2012 |
| Usually created by | Hyper-V, Windows Server |
| OpenAnyFile engine | libarchive WASM engine |
| Opens without upload | Yes — parsed locally in your browser |
Open a .vhdx file in your browser
OpenAnyFile routes .vhdx to its libarchive WASM engine, which opens a browsable listing of everything inside, decompressed in-browser by libarchive compiled to WebAssembly.
- Open the OpenAnyFile opener in this browser — nothing to download or sign up for.
- Drag your .vhdx file onto the drop zone, click to browse for it, or paste it with Ctrl+V.
- The extension is detected and the file is handed to the libarchive WASM engine.
- Your VHDX opens on its own viewer page: a browsable listing of everything inside, decompressed in-browser by libarchive compiled to WebAssembly.
- Use fullscreen for a closer look, or download the file back out unchanged. No account, no upload, no watermark, no file-size gate.
What you can and cannot do with it here
Does not work
Editing and re-saving. OpenAnyFile is a reader, not an editor — for changes you still need special software or an equivalent.
Local-only by design, not by promise
Plenty of sites promise they delete your uploads. OpenAnyFile avoids the promise by avoiding the upload. When you drop a .vhdx file in, the browser grants the page temporary read access to those bytes and nothing more — the page has no path to send them anywhere. You can verify it in seconds: open DevTools, switch to the network tab, and open a file. The request list stays empty.
Frequently asked questions about VHDX files
Can I open a .vhdx file without installing special software?
Yes. OpenAnyFile's libarchive WASM engine runs in your browser, so you can read a VHDX file with nothing installed. You get a browsable listing of everything inside, decompressed in-browser by libarchive compiled to WebAssembly. For full editing you still need the original application — this is a viewer, not an editor.
How can I check a file really is a VHDX file?
Look at the first bytes rather than the extension. A genuine VHDX begins with 76 68 64 78 66 69 6C 65. Opening the file in OpenAnyFile shows that signature in the file-details panel, so a file renamed to .vhdx by mistake is easy to spot.
Is it safe to open a VHDX file online?
With OpenAnyFile, yes, because nothing is uploaded. The file is read locally through your browser's File API and never leaves your device, so there is no server copy to leak, log or retain. That matters most for the kind of file people are least willing to hand to a random converter site.
What is a .vhdx file, exactly?
Hyper-V Virtual Hard Disk v2 — an application/x-vhdx format created by Microsoft since 2012. Raises the limit to 64 TB and adds a log for crash consistency, which VHD lacked entirely.
Does the same viewer handle formats related to VHDX?
Yes — the same engine also opens .7z, .iso, .rar, so you can compare related files without switching tools.
Related formats
These open with the same engine, so if you have one of these sitting next to your .vhdx file, it will open too: