Where is the Atlas ISO file?

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Atlas does not distribute premodified Windows ISO files. Get unmodified Windows media from Microsoft, then use one of these routes:

Is Atlas already installed inside a Manager-created ISO?

The ISO contains the setup files. Atlas is applied on the destination PC after Windows setup and sign-in, so Manager can check Windows and Store updates for the account using it. Internet access and security checks are still required, including in the before-desktop setup mode.

Which Windows ISO should I use?

For Atlas Manager’s ISO creation, use an unmodified Windows 11 25H2 x64 ISO containing a supported edition. Manager checks the release and included editions before building. See the media guide for the full requirements.