Your Citrix product uses one of the license types described in this document. Some products allow you to select more than one type of license. Ensure that you are aware of the licenses that are purchased and how they are consumed. Some license types offer license overdraft and License burst mode as a feature.
Important
The License caching mode and License burst mode features do not apply when licenses expire.
For more information about License caching mode, see License caching mode.
In user/device type licensing the License Server dynamically assigns a license to a user or a device based on the usage and monitors license consumption. The default assignment is a user license. The license server considers each connection and its optimization engine. It ensures that the smallest number of licenses are used based on the userID and deviceID.
The license server truncates domains by default so that abc@eng.com and abc@citrite.com are treated as a same user. For more information, see Disable the domain name truncation.
Note:
Domain membership doesn’t play a role in how licenses are served. A license server can host licenses for any product that can connect to it across the network. Workgroup or Domain membership primarily controls who can be configured as License Server Administrators to access the Citrix Licensing Manager.
For example, the user can connect to their desktops and applications using multiple devices such as desktop, laptop, smartphone, or thin client. A licensed user can connect to multiple instances of Citrix Virtual Desktops concurrently.
For example, single shared devices such as a kiosk or a workstation in a call center environment used by multiple users.
The following table illustrates how user/device licenses are assigned to non-shared devices and exclusively shared devices. Blue color cells display user licenses, where the devices are not shared. Green color cells display device licenses, where the devices are exclusively shared.
When users or devices connect to an application or desktop, they consume a license for a 90 day assignment period. The license assignment period begins when a connection is established. The period is renewed to a full 90 days during the life of the connection. The user/device lease for the license assignment will expire in 90 days after the last connected user or device disconnects.
You can release a license for a user only when:
You can release licenses for devices only when the devices are out of service.
The License Server uses the optimization process to determine how to minimize license consumption. This optimization is based on licenses in use and connections to the License Server. The License Server optimizes every five seconds until there are 5000 unique connections. Connections at 5000 and above optimization occurs every five minutes. Optimization might delay status information until the next optimization, impacting when license usage statistics are updated in various consoles.
Optimization occurs every five seconds for 1-4999 users and every five minutes for 5000 or more users.
Optimization is not consumption. The following table is the example of connections and optimization time when optimization occurs.
| Device and user connection | Optimization time |
|---|---|
| 700 users * 1 device each | 700 (optimize every 5 seconds) |
| 5000 users * 1 device each | 5000 (optimize every five minutes) |
| 5000 devices * 1 user each | 5000 (optimize every five minutes) |
| 2500 users * 2 devices each | 5000 (optimize every five minutes) |
Concurrent license is not tied to a specific userID, Active Directory account, or a domain. Concurrent licensing is based on the originating endpoint deviceID. A user or endpoint device could connect to multiple sessions and use a single license.
You start a product that requests a license and it is checked out to a unique endpoint deviceID. If you log off or disconnect from the session, the license is checked in and made available for a new user. Note, we don’t license per session.
A licensed user requires a unique user ID, such as an Active Directory entry. When a license is assigned to a user, the license allows the user to connect to their desktops and applications using multiple devices. A User license is assigned to the User and not to the User’s devices.
Note:
These licenses are only user licenses and are not the same as user/device licenses.
When a user connects to multiple devices, a user license is consumed for the 90 day assignment period. The license assignment period begins when a connection is made. The period is renewed to the full 90 days during the life of the connection. The device lease for the license assignment will expire in 90 days after the last connected user or device disconnects.
You can release a license for a user only when:
You can release licenses for devices only when the devices are out of service.
A licensed device requires a unique device ID and any individual can access instances of a product. It allows an unlimited number of users per device. A single Device license can support multiple users from the same device.
Note:
These licenses are only device licenses and are not the same as user/device licenses.
When a single device is used by multiple users, a device license is consumed for the 90 day assignment period. The license assignment period begins when a connection is made. The device lease for the license assignment will expire in 90 days after the last connected user or device disconnects.
You can release a license for a user only when:
You can release licenses for devices only when the devices are out of service.
Per socket licenses are consumed based on the number of CPU sockets. Cores are not counted. For example:
Citrix Hypervisor uses per socket licenses.
In a product when you request a license, a named user license is checked out until a preconfigured period expires. This type of license check-out is not tied to a computer or a device. After the license is checked out, the user can run multiple sessions on different computers without checking out more licenses.
Citrix aims to provide the best customer experience possible, many of Citrix’s products offer a demo experience. You can set up this demo experience directly through citrix.com or by contacting Citrix sales team. These demos allow for a customized experience to fit your needs, use cases and active projects; get real-time answers and advice from a Citrix expert.
IMPORTANT:
The allotment is one evaluation license per product, per account, per year.
On-premises products that support user/device, user, or device license models include a license overdraft feature. This feature enables you to use an additional 10% of extra licenses beyond the purchased quantity to prevent access denial. The license overdraft count is displayed in a separate column within the License Administration Console. The installed column displays both the purchased license total plus the associated overdraft total. Overdraft usage is also visible in Studio.
The license overdraft feature is offered as a convenience, not as a license entitlement. Any overdraft licenses used must be purchased within 30 days of first use.
Concurrent licenses and server licenses do not contain the overdraft feature. Citrix reserves the right to remove any overdraft features in new product releases.
The License burst mode enables unlimited connections to a product for 15 consecutive days. This feature is available to Citrix Virtual Apps and Desktops licenses. You can use this feature with a XenApp 7.6 or XenDesktop 7.6 version and above.
If all licenses are in use, including the license overdraft where applicable, the License burst mode gives you time to determine why you exceeded the maximum license count and to purchase more licenses without disrupting your users.
After the License burst mode expires, normal connection limits are enforced. Users are not disconnected during active sessions. As they disconnect, however, no new connections can occur until the license levels return to normal.
The License burst mode is not automatically re-enabled once it completes. To re-enable the License burst mode, you must install another retail license. This retail license grants a new 15-day License burst mode if and when you exceed the subsequent maximum installed license limit.
We recommend that you allow the License burst mode to run out after it starts. To clear the warning condition do not add licenses immediately. Doing so gives you time to fully assess the situation and correctly address any issues.
Note:
If you install licenses while the License burst mode is in force, the License Server exits the License burst mode. Reenabling the License burst mode before fully determining the reason for the License burst mode, and how many licenses you require, might cause you to reenter the period after installing new licenses.
License burst mode is granted per product version and edition and only for retail licenses. The License burst mode is enabled by default when you first install the license. To disable the License burst mode feature, use the Citrix Licensing Manager.
There is no way to track the total number of licenses consumed while in the License burst mode. You can use lmstat udadmin and connection information from the product to determine how many more licenses are required.
Note:
The License caching mode and License burst mode are two different features.
The License caching mode and License burst mode features do not apply when licenses expire.
For more information about License caching mode, see License caching mode.
Citrix Virtual Apps and Desktops Director displays the License burst mode states. For more information, see Panels on the Director Dashboard.
The License burst mode feature is offered as a convenience, not as a license entitlement. Citrix reserves the right to remove any such feature in new product releases.
Example 1: Citrix Virtual Apps and Desktops user/device, user, or device licenses using the overdraft and License burst mode features
You initially purchase and install 1000 licenses from Citrix (I) which includes a 10% license overdraft allowance (OD). When licenses are allocated, you have 1100 licenses in total. At the time it is sufficient for the number of users connecting.
d0 At a later date (day 0) you are using 1050 licenses. When the 1001st license was used, the overdraft feature was activated. Your users can continue to connect without any disruption of service. You start evaluating your licensing needs now. Do not wait until you exceed the OD. Think about buying more licenses in addition to the 1000 you bought initially.
d10 10 days later (day 10) more users connect and 1150 licenses are being used, which exceeds the 1100 total licenses you have available (!). When the 1101st license was used, the 15 day License burst mode started, to allow you time to evaluate your license needs. Your users can continue to connect without any disruption of service.
d25 15 days later after d10 (day 25) the License burst mode runs out because you chose not to purchase and install more licenses. Users cannot make new connections if doing so requires more than 1100 licenses to be checked out. You cannot re-enable the License burst mode until you purchase and install more licenses.
Example 2: Citrix Virtual Apps and Desktops concurrent licenses using License burst mode feature
You initially purchase and install 1000 concurrent licenses (I). There is no overdraft allowance with concurrent licenses. At the time these licenses are sufficient for the number of users connecting.
d0 At a later date (day 0) you are using 1050 licenses. When the 1001st license was used, the 15 day License burst mode started, to allow you time to evaluate your license needs. Your users can continue to connect without any disruption of service. You start evaluating your licensing needs now. Do not wait until the License burst mode runs out. Think about buying more licenses in addition to the 1000 you bought initially.
d15 15 days later (day 15) the License burst mode runs out because you chose not to purchase and install more licenses. Users cannot make new connections if doing so requires more than 1000 licenses to be checked out. You cannot re-enable the License burst mode until you purchase and install more licenses.
The following table lists the support for license overdraft and License burst mode for each product. For more information, see Products and license models.
| On-premises product | License type | 10% Overdraft | License burst mode (15 days) |
|---|---|---|---|
| Citrix Virtual Apps and Desktops | User/device, User, Device | Yes | Yes |
| Citrix Virtual Apps and Desktops | Concurrent | No | Yes |
| XenMobile Server | User, Device | Yes | No |
On-premises subscription licensing allows customers to host a Citrix environment within their infrastructure for a set period. The on-premises subscription license is time-bound for 1-5 years and expires on a specific date. The license ceases to operate following the expiration date. The products offer everything that is available today with perpetual licenses.
Your purchase includes both an on-premises subscription license and Customer Success Services Select service. Customer Success Select service is included for the entire term of the subscription.
Note:
Mixing permanent (perpetual) and subscription licenses is supported. They can be used to expand existing environments provided customers use the same product, edition, and license model. There are no performance impacts to using perpetual vs. subscription licenses. The only difference between them is one expires.
Citrix notifies you at certain intervals when your existing subscription approaches expiration. These notifications alert you to extend the subscription and avoid service interruption.
When your on-premises subscription expires, as per the date listed in the Citrix Licensing Manager, no new connections are allowed. Existing users are not impacted, however, if users log off or disconnect they are not allowed to reconnect.
To extend your on-premises license subscription, visit https://www.citrix.com/buy/.
Note:
Licenses with a future start date are not displayed in the License Server inventory until the actual start date mentioned in the license file.
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DIESER DIENST KANN ÜBERSETZUNGEN ENTHALTEN, DIE VON GOOGLE BEREITGESTELLT WERDEN. GOOGLE LEHNT JEDE AUSDRÜCKLICHE ODER STILLSCHWEIGENDE GEWÄHRLEISTUNG IN BEZUG AUF DIE ÜBERSETZUNGEN AB, EINSCHLIESSLICH JEGLICHER GEWÄHRLEISTUNG DER GENAUIGKEIT, ZUVERLÄSSIGKEIT UND JEGLICHER STILLSCHWEIGENDEN GEWÄHRLEISTUNG DER MARKTGÄNGIGKEIT, DER EIGNUNG FÜR EINEN BESTIMMTEN ZWECK UND DER NICHTVERLETZUNG VON RECHTEN DRITTER.
CE SERVICE PEUT CONTENIR DES TRADUCTIONS FOURNIES PAR GOOGLE. GOOGLE EXCLUT TOUTE GARANTIE RELATIVE AUX TRADUCTIONS, EXPRESSE OU IMPLICITE, Y COMPRIS TOUTE GARANTIE D'EXACTITUDE, DE FIABILITÉ ET TOUTE GARANTIE IMPLICITE DE QUALITÉ MARCHANDE, D'ADÉQUATION À UN USAGE PARTICULIER ET D'ABSENCE DE CONTREFAÇON.
ESTE SERVICIO PUEDE CONTENER TRADUCCIONES CON TECNOLOGÍA DE GOOGLE. GOOGLE RENUNCIA A TODAS LAS GARANTÍAS RELACIONADAS CON LAS TRADUCCIONES, TANTO IMPLÍCITAS COMO EXPLÍCITAS, INCLUIDAS LAS GARANTÍAS DE EXACTITUD, FIABILIDAD Y OTRAS GARANTÍAS IMPLÍCITAS DE COMERCIABILIDAD, IDONEIDAD PARA UN FIN EN PARTICULAR Y AUSENCIA DE INFRACCIÓN DE DERECHOS.
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ESTE SERVIÇO PODE CONTER TRADUÇÕES FORNECIDAS PELO GOOGLE. O GOOGLE SE EXIME DE TODAS AS GARANTIAS RELACIONADAS COM AS TRADUÇÕES, EXPRESSAS OU IMPLÍCITAS, INCLUINDO QUALQUER GARANTIA DE PRECISÃO, CONFIABILIDADE E QUALQUER GARANTIA IMPLÍCITA DE COMERCIALIZAÇÃO, ADEQUAÇÃO A UM PROPÓSITO ESPECÍFICO E NÃO INFRAÇÃO.
