# Adding the single sign-on extension to an existing web portal in Amazon WorkSpaces Secure Browser
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To add the extension to an existing web portal, follow these steps.

1. Open the WorkSpaces Secure Browser console at [https://console.aws.amazon.com/workspaces-web/home](https://console.aws.amazon.com/workspaces-web/home).

1. Select the web portal to edit.

1. Choose **User settings**, **Users permissions**, and **Allowed** to enable the extension for your web portal.

1. Enter the domain for cookie synchronization, choose **Add new domain**. 

1. Save your portal changes. The portals will prompt users to install the extension within 15 minutes.