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150150 </Step>
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152152 <Step title="Attach the key to a workspace">
153 Open **Settings > Workspaces**, choose the workspace, and open its **Security** tab. Under **Encryption key**, select the key, click **Save**, and confirm. Attaching a key can't be undone. For a workspace that already receives requests, the key can take [up to a day to take effect](https://platform.claude.com/docs/en/manage-claude/cmek#how-it-works).
153 In the Claude Console, go to [Manage > Security](https://platform.claude.com/settings/workspaces/default/security-compliance) and select the workspace in the workspace picker at the top of the sidebar. Under **Encryption key**, select the key, click **Save**, and confirm. Attaching a key can't be undone. For a workspace that already receives requests, the key can take [up to a day to take effect](https://platform.claude.com/docs/en/manage-claude/cmek#how-it-works).
154154 </Step>
155155 </Steps>
156156 </Tab>