### Prerequisites
To enable external user access with the Global Secure Access client, you must have:
- External users(guest or member) configured in the resource tenant. For more information, see the following articles:
- [Quickstart: Add a external user and send an invitation](../external-id/b2b-quickstart-add-guest-users-portal.md)
- [Understand and manage the properties of external user users](../external-id/user-properties.md)
- The Global Secure Access client installed and running on the device connected to the home tenant. To install the Global Secure Access client, see [Install the Global Secure Access client for Microsoft Windows](how-to-install-windows-client.md).
> [!TIP]
> The home tenant doesn't need to have a Global Secure Access license.
### Prerequisites
To enable external user access with the Global Secure Access client, you must have:
- External users (guest or member) configured in the resource tenant. For more information, see the following articles:
- [Quickstart: Add a external user and send an invitation](../external-id/b2b-quickstart-add-guest-users-portal.md)
- [Understand and manage the properties of external users](../external-id/user-properties.md)
- The Global Secure Access client installed and running on the device connected to the home tenant. To install the Global Secure Access client, see [Install the Global Secure Access client for Microsoft Windows](how-to-install-windows-client.md).
> [!TIP]
> The home tenant doesn't need to have a Global Secure Access license.