WebView2 Archives

An unofficial, automated archive of Microsoft Edge WebView2 Fixed Version runtime cabinets.

Microsoft only keeps a short sliding window of Fixed Version packages on the official download page. This repository polls that catalog and republishes each version as a GitHub Release so older builds remain downloadable after Microsoft removes them.

What is archived

Each GitHub Release is one Fixed Version, with cabinets for:

• x86
• x64
• arm64

Filenames match Microsoft's:

Microsoft.WebView2.FixedVersionRuntime.<version>.<arch>.cab

Every release also includes SHA256SUMS.txt and source.json (original Microsoft URLs and fetch time). The GitHub latest release additionally has stable aliases (x64.cab, x86.cab, arm64.cab) and latest-version.txt.

Evergreen standalone installers and the bootstrapper are not mirrored here. Use Microsoft's stable links if you need those:

Package	Link
Bootstrapper	https://go.microsoft.com/fwlink/p/?LinkId=2124703
Standalone x86	https://go.microsoft.com/fwlink/?linkid=2099617
Standalone x64	https://go.microsoft.com/fwlink/?linkid=2124701
Standalone ARM64	https://go.microsoft.com/fwlink/?linkid=2099616

How often it runs

GitHub Actions runs on a cron every 6 hours (17 */6 * * *, UTC) and on demand via Actions → Archive WebView2 → Run workflow.

Scheduled runs only fire after this workflow file is on the default branch (main). Overlapping jobs do not cancel each other.

The first successful run seeds every version Microsoft currently lists. Later runs only publish versions that are not already archived.

Download a version

Browse Releases.

Always-current permalinks (GitHub /releases/latest, updated whenever a newer Fixed Version is archived):

https://github.com/ciderapp/WebView2-Archives/releases/latest/download/x64.cab
https://github.com/ciderapp/WebView2-Archives/releases/latest/download/x86.cab
https://github.com/ciderapp/WebView2-Archives/releases/latest/download/arm64.cab
https://github.com/ciderapp/WebView2-Archives/releases/latest/download/latest-version.txt

curl -fsSL -O "https://github.com/ciderapp/WebView2-Archives/releases/latest/download/x64.cab"
curl -fsSL "https://github.com/ciderapp/WebView2-Archives/releases/latest/download/latest-version.txt"

Unversioned Microsoft-style names are also attached to the latest release:

https://github.com/ciderapp/WebView2-Archives/releases/latest/download/Microsoft.WebView2.FixedVersionRuntime.x64.cab

Pin a specific version instead:

gh release download 153.0.4234.32 --repo ciderapp/WebView2-Archives
curl -L -O "https://github.com/ciderapp/WebView2-Archives/releases/download/153.0.4234.32/Microsoft.WebView2.FixedVersionRuntime.153.0.4234.32.x64.cab"

Verify the download:

sha256sum -c SHA256SUMS.txt

Expand a cabinet

Do not extract the .cab with File Explorer. That can break the folder layout WebView2 expects.

On Windows:

expand Microsoft.WebView2.FixedVersionRuntime.153.0.4234.32.x64.cab -F:* C:\WebView2

That produces a folder such as:

C:\WebView2\Microsoft.WebView2.FixedVersionRuntime.153.0.4234.32.x64\msedgewebview2.exe

Point your app at that folder:

• Win32: CreateCoreWebView2EnvironmentWithOptions browserExecutableFolder
• WPF / WinForms: CoreWebView2Environment.CreateAsync(browserExecutableFolder, ...)
• Any loader that honors it: WEBVIEW2_BROWSER_EXECUTABLE_FOLDER

See Microsoft's Fixed Version distribution notes for permissions required on Windows 10 (runtime 120+).

Machine-readable catalog

After each archive run the workflow updates two files on main:

• catalog.json: every archived version
• latest.json: the newest archived version, plus /releases/latest/download permalinks

Raw URLs:

https://raw.githubusercontent.com/ciderapp/WebView2-Archives/main/catalog.json
https://raw.githubusercontent.com/ciderapp/WebView2-Archives/main/latest.json

catalog.json schema

{
  "generated_at": "2026-09-11T19:00:00Z",
  "source": "https://developer.microsoft.com/microsoft-edge/api/webview2",
  "latest": "153.0.4234.32",
  "releases": [
    {
      "version": "153.0.4234.32",
      "tag": "153.0.4234.32",
      "html_url": "https://github.com/ciderapp/WebView2-Archives/releases/tag/153.0.4234.32",
      "published_at": "2026-09-11T19:00:00Z",
      "assets": [
        {
          "architecture": "x64",
          "filename": "Microsoft.WebView2.FixedVersionRuntime.153.0.4234.32.x64.cab",
          "size": 308367262,
          "sha256": "...",
          "browser_download_url": "https://github.com/ciderapp/WebView2-Archives/releases/download/153.0.4234.32/Microsoft.WebView2.FixedVersionRuntime.153.0.4234.32.x64.cab"
        }
      ]
    }
  ]
}

catalog.json and latest.json stay empty until the first workflow run publishes releases.

Official Microsoft links

• Download the WebView2 Runtime
• Distribute your app and the WebView2 Runtime
• Evergreen vs. Fixed Version
• WebView2 Runtime release notes

Prefer Microsoft's page whenever the version you need is still listed there.

How the pipeline works

1. .github/workflows/archive.yml runs on a 6-hour cron (and manually).
2. cmd/archive (Go) reads Microsoft's public catalog:
   • https://developer.microsoft.com/microsoft-edge/api/webview2
   • fallback https://explore.microsoft.com/microsoft-edge/api/webview2
3. Versions that already have a GitHub Release are skipped.
4. Missing cabinets across versions are downloaded in one aria2 session (16 connections per file, up to 16 files at once, resume enabled), then checksummed in parallel.
5. GitHub Releases are created in parallel. Cabinet uploads share a pool of 8 connections so multiple versions ship at once. The highest archived version is marked as GitHub’s latest release and given stable aliases (x64.cab, x86.cab, arm64.cab) during that same publish so /releases/latest/download/x64.cab always follows the newest archive.
6. catalog.json and latest.json are rebuilt from this repo's releases.

Disclaimer

This is an unofficial archive. It is not affiliated with, endorsed by, or sponsored by Microsoft Corporation.

Microsoft, Microsoft Edge, WebView2, and related marks are trademarks of Microsoft Corporation. This project does not claim any ownership of those marks or of the WebView2 runtime.

The .cab files attached to GitHub Releases are Microsoft software. Downloading or using them remains subject to Microsoft's license terms and EULA. The MIT license in this repository covers only our scripts, workflows, and documentation, not Microsoft binaries.

Packages are provided as-is, with no warranty. Use at your own risk.

License

MIT for original repository files (scripts, workflows, docs). Microsoft binaries are excluded.