Current build
What you are downloading
Every field here comes from the published release record.
Launcher 2026.9.22.1224
Stable channel, Windows
- Version
- 2026.9.22.1224
- Published
- Platform
- windows-x64, stable channel
- File
- Astra-setup.exe
- Size
- 38 MB (38,218,267 bytes)
- SHA-256
058b35cccfcaa5fb4098bfcace764d817a99730bf7b8c310d87a0f9f39b747e1- Oldest expected launcher
- Not recorded for this build
Verify
Check the file before you run it
Run this in PowerShell from the folder you saved the installer in and compare the output with the digest above. If the two do not match, do not run the file.
Get-FileHash -Algorithm SHA256 .\Astra-setup.exeRequirements
What you need to run it
Short list, no surprises.
- Operating system
- Windows, 64-bit. There is no macOS or Linux build.
- Account
- An active subscription or a redeemed license key. The installer is free to download; a session needs entitlement.
- First run
- The launcher registers the machine by creating a key pair locally and proving it holds the private key. That key becomes the device identity.
- Connection
- The calculations run on our servers, so the launcher needs a working connection while you use them.
- Seats
- Installing on several machines is fine. Running them at the same time needs a seat for each, and the subscription carries one.
Releases
How builds are published
How to think about this page and the files it points at.
- Immutable URLs
- Each release has its own artifact URL, and the bytes at that URL never change. A new version is published at a new URL.
- What this page is
- A discovery listing of the current stable build. It is served over HTTPS but it is not signed release metadata, so check the digest before you run the file.
- Channel
- Stable. There is no beta or nightly channel offered here.