Get started changedclaude-science/get-started
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7070## Sign in and complete setup
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72When the app opens, sign in with your Claude account. On Windows, click the **Sign in on the web** button and confirm with **Continue**; the app opens claude.ai in your default browser and continues in the app window once you approve the sign-in there. If the sign-in redirect can't return to the app (for example, through an SSH tunnel), use the **Paste code instead** option on the sign-in screen. No API key is required.
72When the app opens, sign in with your Claude account. On Windows, click the **Sign in on the web** button and confirm with **Continue**; the app opens claude.ai in your default browser and continues in the app window once you approve the sign-in there. No API key is required.
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74If you approve the sign-in in your browser but Claude Science doesn't continue (for example, on a remote server when the sign-in can't return through the SSH tunnel), sign in with a code instead:
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761. Go back to the Claude Science sign-in screen and select **Paste code instead**, then **Open on web**.
772. Approve access in the browser, then copy the whole code the page shows.
783. Paste the code into Claude Science. If the sign-in doesn't continue on its own, select **Continue**.
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7480After sign-in, a setup wizard walks you through enabling connectors and skills, setting which websites Claude can access, and choosing whether memory is on. You can change these at any time in Settings.
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7682<Note>
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9298<Warning>
9399 Deleting the data folder (`~/.claude-science`, or `%USERPROFILE%\.claude-science` on Windows) removes all your projects, artifacts, conversation history, environments, and settings, and signs you out. Copy anything you want to keep first, with **Download** on an artifact or by copying the project's folder from inside the data folder.
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95 If you moved your data to another folder, check where it is under **Settings > Storage > Data location** before you uninstall. The environments and the sign-in stay in the default folder even then, so to remove all your data, delete both folders. First check that the folder you moved your data to holds nothing else you want to keep. Files in the folders you granted Claude access to aren't affected unless they're inside the folder you moved your data to.
101 Before you uninstall, check where your data is under **Settings > Storage > Data location**. If it shows a folder other than the default, the default folder still holds your environments and your sign-in, and it can also hold projects from before that location was set. To remove all your data:
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103 * The folder that **Data location** shows holds your current projects. Move anything else you stored there yourself out of it, then delete that folder.
104 * Delete the default folder (`~/.claude-science`, or `%USERPROFILE%\.claude-science` on Windows).
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106 Files in the folders you granted Claude access to aren't affected unless they're inside the folder that **Data location** shows.
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121132 </Step>
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123134 <Step title="Uninstall the app">
124 In Windows **Settings**, go to **Apps > Installed apps** and uninstall **Claude Science**. To remove the app and your data together, run `claude-science uninstall --purge` in a terminal instead.
135 In Windows **Settings**, go to **Apps > Installed apps** and uninstall **Claude Science**, or run `claude-science uninstall` in a terminal.
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126 If you changed the data location in **Settings > Storage > Data location**, `--purge` deletes that entire folder, including any files in it that Claude Science didn't create. Move those files out first. `--purge` also leaves `%USERPROFILE%\.claude-science` behind for you to delete.
137 To remove the app and your data together, use `claude-science uninstall --purge` instead. It deletes the whole folder your data location points to, including anything you stored there yourself, so move those files out first.
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139 When your data location isn't `%USERPROFILE%\.claude-science`, `--purge` leaves that folder in place. It still holds your environments and your sign-in, and it can also hold projects from before that location was set. To remove those too, delete `%USERPROFILE%\.claude-science` yourself.
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160173* On macOS, some of Claude's tools can't start and the error mentions the Xcode license, usually right after an Xcode update: macOS won't run the Python that comes with Apple's developer tools until the license is accepted. Open Xcode and agree to the license with an administrator account, or run `sudo xcodebuild -license accept` in Terminal, then ask Claude to try again.
161174* 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.
162175* 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)).
176* 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).
163177* 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.
164178* 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).
165179* On Linux, `claude-science serve` stops with `Sandbox unavailable: bwrap too old`: the installed bubblewrap is older than 0.8.0. Check the version with `bwrap --version`, then upgrade bubblewrap. Ubuntu 24.04's repositories carry a new enough version and Ubuntu 22.04's don't.
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167181* On Linux, an error says `socat is required for Linux sandbox networking but was not found in PATH`: socat isn't installed, or isn't on your PATH. Install socat with the command for your distribution in the Linux tab of [Install](#install).
168182* Projects from another computer don't appear: by design, Claude Science keeps your work on the computer where it's installed, so each computer starts with its own projects. Your earlier projects are still on the other computer. See [Use Claude Science on more than one computer](/docs/claude-science/multiple-computers).
169183* Projects you created under another sign-in on this computer don't appear automatically, for example, after you move from a personal plan to your organization's Team plan: your earlier projects are still in that sign-in's folder. Select the **Review** button on the banner at the top of the home screen, or select **Review** next to **Access previously saved Claude Science work on this computer** under **Settings** > **General** > **Account**, to access them. On Team and Enterprise plans, if there's no banner and the setting is grayed out, your admin controls it. See [Access work from another sign-in on your computer](/docs/claude-science/multiple-computers#access-work-from-another-sign-in-on-your-computer).
170* Sign-in stops at claude.ai: your account is on the Free plan (upgrade required), the redirect couldn't return (use Paste a code), or your Team or Enterprise organization hasn't [enabled Claude Science](/docs/claude-science/enable-claude-science) yet.
184* Sign-in stops at claude.ai: your account is on the Free plan (upgrade required), the redirect couldn't return (use **Paste code instead**), or your Team or Enterprise organization hasn't [enabled Claude Science](/docs/claude-science/enable-claude-science) yet.
185* After you paste a code, Claude Science says the code wasn't recognized or was issued for an earlier sign-in attempt: select **Open on web** again, approve access, and paste the whole new code. If it says `PKCE state missing or expired` instead, select **Back** and follow the steps in [Sign in and complete setup](#sign-in-and-complete-setup) again.
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