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Nearest release: v2.1.302, published under an hour before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 16 Oct 2026 17:19 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 16 Oct 2026 17:37 UTC.
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179179* A Claude Science message on Windows says the app was not installed because the file could not be confirmed: the copy you opened still runs but isn't installed. Download the installer again from [claude.com/product/claude-science](https://claude.com/product/claude-science) and open the new file. If the message persists, the PC could not verify the publisher's signature, so ask your IT team.
180180* The Windows app reports that it couldn't set up the app window engine: the first launch downloads that engine from `downloads.claude.ai`, and this usually means the app couldn't reach it. Check the internet connection, and on a corporate network ask IT to allow that domain (see [Network requirements](/docs/claude-science/network-requirements)).
181181* On Linux, the installer stops with `The download service may be unreachable, or not yet available in your region`: the installer couldn't get the latest version from `storage.googleapis.com`. Check the internet connection, and on a corporate network ask IT to allow that domain (see [Network requirements](/docs/claude-science/network-requirements#app-connections)). Claude Science is available where Anthropic offers claude.ai. See [Supported countries and regions](https://www.anthropic.com/supported-countries).
182* On Linux, the installer stops with `was NOT installed` and says the copy you already had `was left as it is`: Claude Science was already installed, so the installer first tried to check that the new version starts on this computer. The check didn't succeed, so nothing was replaced. The message and the lines under it say why and, where there is a fix, what to do. If they point to the [configuration file](/docs/claude-science/configuration-file-reference), `~/.claude-science/config.toml`, fix what they report in that file, then run the installer again from the Linux tab of [Install](#install). Otherwise, keep using the copy you already had.
182183* On Linux, the shell reports `command not found` for `claude-science`: `~/.local/bin` isn't on your PATH. Add the PATH line that the installer printed to your shell profile, then open a new terminal.
183184* On Linux, `claude-science serve` stops with a `Sandbox unavailable:` message that mentions `bwrap was found on PATH at`, `is not where Claude Science runs it from`, `(PATH is not searched)`, or `is deliberately not used`: version 0.1.61 prints these messages, because it needs bubblewrap and socat installed for the whole system. If you updated to it from inside the app, the "Update available" notice shows "restart aborted" instead of these messages. Version 0.1.62 withdraws that requirement. Run `claude-science update` in a terminal, then start Claude Science again.
184185* On Linux, `claude-science serve` stops with `Sandbox unavailable: bwrap not found on PATH`: bubblewrap isn't installed, or isn't on your PATH. Install bubblewrap and socat with the command for your distribution in the Linux tab of [Install](#install).
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