# Parallels RAS licensing

Parallels RAS uses concurrent-user licensing. This means that a user can establish any number of connections to Parallels RAS as long as the number of users simultaneously accessing Parallels RAS does not exceed the number of concurrent user licenses.

Consider the following examples:

* One user, one device, one connection — one license is needed.
* One user, one or multiple devices, multiple connections — one license is needed.
* Multiple users, each establishing one or multiple connections — a license is needed for each user. When all licenses are used up, the next user will have to wait for one of the current users to log out from all sessions.

The following table shows license consumption by connection type and user rights:

| Connection Type                                      | User Rights   | Consumes RAS License |
| ---------------------------------------------------- | ------------- | -------------------- |
| RAS desktop/published application connection         | Non-admin     | Yes                  |
| RDP desktop/published application connection         | Non-admin     | Yes                  |
| RAS published application connection                 | Administrator | Yes                  |
| RAS published desktop connection**\***          | Administrator | No                   |
| Direct or tunneled RDP desktop connection**\*** | Administrator | No                   |

**\*** Maximum up to two connections of either type per RD Session Host.

## **Prepaid Subscription**

You license Parallels RAS with a prepaid subscription, which works as follows:

* Your active subscription allows you to upgrade to a newer version of Parallels RAS whenever one becomes available.
* A subscription is purchased for a predefined period of time, either one month, one year, two years, or three years. One-month subscriptions can only be purchased online.
* If a subscription is purchased online, by default it is set to automatically renew when the subscription period ends. Subscriptions purchased through a reseller must be renewed through the reseller.
* Support is included in the cost of the subscription. You can choose either the Standard or Premium support plan.

## **Grace Period**

If your license expires, Parallels RAS continues to run for a grace period of 30 days, within which time you should renew your subscription. Please note that the grace period does not apply to sublicenses. Sublicenses are described in [**Create additional license keys**](/landing/ras-licensing-guide/manage-subscriptions-and-licenses/create-additional-license-keys.md).

## **Microsoft licensing**

Please also read about [**Microsoft license requirements in Parallels RAS**](/landing/ras-licensing-guide/microsoft-license-requirements-in-parallels-ras.md).


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