License types

Your product uses one of the following types of licenses (some products allow you to select more than one type). Ensure that you are aware of the types of licenses that your company purchased and how they consume them. We also offer license overdraft as a feature of the license files. See the license overdraft description at the end of this article.

The license types are:

User/device licenses

With a minimum of XenDesktop 5 Service Pack 1, XenApp 6.5, and Citrix Virtual Apps and Desktops 7 1808: The License Server can allocate licenses to a user or a device and monitor license consumption. When assigned to a user, the license allows access from an unlimited number of devices. When assigned to a device, the license allows access from the device by an unlimited number of users.

A licensed device requires a unique device ID and any individuals can access instances of Citrix Virtual Desktops. Use this type of license for shared devices, such as a classroom or hospital.

A licensed user requires a unique user ID, such as an Active Directory entry. When assigned to a user, the license allows the user to connect to their desktops and applications using multiple devices. For example, desktop computer, laptop, netbook, smartphone, or thin client. A licensed user can connect to multiple instances of Citrix Virtual Desktops concurrently.

When users or devices connect to an application or desktop, they consume a license for the 90-day license assignment period. The assignment period begins when a connection is made. The period is renewed to the full 90 days during the life of the connection. Expiration (allowing reassignment) is 90 days after the last connection ends (logs off or disconnects). If you have to end a license assignment manually before the 90-day period elapses, use the udadmin command-line tool. For example, an employee consuming a user license leaves the company.

Optimization

The License Server uses the optimization process to determine how to minimize consumption based on licenses in use and connections to the License Server. The License Server optimizes every five seconds until there are 5000 unique connections. At 5000 unique connections, optimization occurs every five minutes. Optimization might delay status information until the next optimization impacting when license usage statistics are updated in various consoles.

Examples of unique connections - Optimization is not consumption and these examples show when optimization occurs.

Optimization occurs every five seconds for 1-4999 uses and every five minutes for 5000 or more uses.

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)

Note:

If you have a large deployment, optimization can be CPU intensive depending on the number of unique connections. We recommend using machines with multiple cores.

Concurrent licenses

A concurrent license is not tied to a specific user or domain. You start a product, the product requests the license and it’s checked out to the specific computer or device that person is using. After the user logs off or disconnects from the session, the license is checked back in and is available for another user. Using this logic, keep the following scenarios in mind:

  • Multiple sessions at different computers use multiple licenses. Each time a user starts a Citrix session from a different computer or device, a license is checked out until the user closes the session. At that point, the license is checked back in. For example, a user starts a session from one computer and then starts another from another computer before closing the first session. Two licenses are checked out.

  • License Servers do not communicate with each other. If you run multiple License Servers, you might consume more than one license (for example, with load balancing). If you are using load balancing, we recommend that the product servers point to the same License Server.

  • Different editions consume different licenses. If a user connects to an application published on a computer running the Advanced edition, and then uses the same client to connect to an application published on a computer running the Premium edition, two licenses are consumed.

  • A user makes multiple connections from a single device to different product servers configured as the same edition and pointing to the same License Server. Only one license is consumed.

  • For license sharing, pass-through connections on Citrix Virtual Apps and Desktops pass the endpoint client device ID to the product server. If you connect to a single product, edition, and license model with a shared License Server, all connections share a single license.

  • A user connects from a single device to two product servers that are the same edition but different versions. One or two licenses might be consumed based on the order in which the user makes the connections. For example, the two servers are Citrix Virtual Apps and Desktops 7 1811 and Citrix Virtual Apps and Desktops 7 1903 (though this example applies to nearly all Citrix products and versions):
    • The user connects to Citrix Virtual Apps and Desktops 7 1811 first - Two licenses might be consumed - An older license first, for the older product, and then a newer license because version 1903 requires a newer Customer Success Services date.
    • The user connects to Citrix Virtual Apps and Desktops 7 1903 first - Only one license is consumed because the Customer Success Services date required by version 1903 is compatible with all older product versions.
  • RDP connections consume a license (RDP connections to a console do not consume a license).

  • If the number of purchased and available standalone concurrent licenses is exceeded, all users over the limit are denied access unless the supplemental grace period is possible. For more information, see Supplemental grace period.

Per user licenses (only user licenses - not the same as user/device licenses)

A licensed user requires a unique user ID, such as an Active Directory entry. When assigned to a user, the license allows the user to connect to their desktops and applications using multiple devices. For example, desktop computer, laptop, netbook, smartphone, or thin client. A licensed user can connect to multiple instances of Citrix Virtual Desktops concurrently. A licensed user can connect to multiple instances of a product concurrently. When users connect to an application or desktop, they consume a license for the 90-day license assignment period. The assignment period begins when a connection is made. The period is renewed to the full 90 days during the life of the connection. Expiration (allowing reassignment) is 90 days after the last connection ends (logs off or disconnects). If you have to end a license assignment manually before the 90-day period elapses, use the udadmin command-line tool. For example, an employee consuming a user license leaves the company.

Per device licenses (only device licenses - not the same as user/device licenses)

A licensed device requires a unique device ID and any individuals can access instances of a product. Use this type of license for shared devices, such as classroom or hospital. It allows an unlimited number of users per device. When devices connect to an application or desktop, they consume a license for the 90-day license assignment period. The assignment period begins when a connection is made. The period is renewed to the full 90 days during the life of the connection. Expiration (allowing reassignment) is 90 days after the last connection ends (logs off or disconnects). If you have to end a license assignment manually before the 90-day period elapses, use the udadmin command-line tool. For example, an employee consuming a user license leaves the company.

Per socket licenses

Licenses are consumed per CPU socket used by a CPU and cores are not counted. For example, if a computer having two CPU sockets have only one CPU, only one license is used. In another example, if that same computer with two sockets has two CPUs, each with a quad core, only two licenses are used.

Named user licenses

When a product requests a license, it is checked out to the user until a preconfigured period expires. This type of check-out is not tied to a computer or device. After the license is checked out, the user can run multiple sessions on different computers without checking out more licenses.

License overdraft

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 feature in new product releases.

Supplemental grace period

The supplemental grace period enables unlimited connections to a product for up to 15 consecutive days. This feature is available to Citrix Virtual Apps and Desktops licenses with a minimum of XenApp 7.6 or XenDesktop 7.6.

If all licenses are in use, including the license overdraft where applicable, the supplemental grace period gives you time to determine why you exceeded the maximum license count and to purchase more licenses without disrupting your users.

After the supplementary grace period 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 supplemental grace period is not automatically re-enabled once it completes. To re-enable the supplemental grace period, customers must install another retail license, which grants a new 15-day supplemental grace period if and when you exceed the subsequent maximum installed licenses limit.

We recommend that after the supplemental grace period starts, you allow it to run out rather than adding licenses immediately to clear the warning condition. Doing so gives you time to fully assess the situation and correctly address any issues.

Note:

If you install licenses while the supplemental grace period is in force, the License Server exits the supplemental grace period. Reenabling the supplemental grace period before fully determining the reason for the supplemental grace period, and how many licenses you require, might cause you to reenter the period after installing new licenses.

Supplemental grace periods are granted per product version and edition and only for retail licenses. The supplemental grace period is enabled by default when you first install the licenses. To disable the supplemental grace period feature, use the Citrix Licensing Manager.

There is no way to track the total number of licenses consumed while in the supplemental grace period.

The grace period and supplemental grace period are two different features. For more information about grace periods, see Grace period.

Citrix Virtual Apps and Desktops Director displays the grace period states. For more information, see Panels on the Director Dashboard.

The supplemental grace period feature is offered as a convenience, not as a license entitlement. Citrix reserves the right to remove any such feature in new product releases.

Overdraft and Supplemental grace geriod examples

Example 1: Citrix Virtual Apps and Desktops user/device, user, or device licenses using the overdraft and supplemental grace period features

Overdraft and Supplemental grace period

You initially purchase and install 1000 licenses from Citrix (I) which includes a 10% license overdraft allowance (OD). When licenses are allocated, you will have 1100 licenses in total. At the time this is sufficient for the number of users connecting.

d0 At a later date (day 0) you are using 1050 licenses. As soon as the 1001st license was used, the overdraft feature was activated. Your users can continue to connect without any disruption of service. You should 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 Ten days later (day 10) more users connect and 1150 licenses are being used, which exceeds the 1100 total licenses you have available (!). As soon as the 1101st license was used, the 15-day supplemental grace period (SPG) started, to allow you time to evaluate your license needs. Your users can continue to connect without any disruption of service.

d25 Fifteen days later (day 25) the supplemental grace period 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 supplemental grace period until you purchase and install more licenses.

Example 2: Citrix Virtual Apps and Desktops concurrent licenses using supplemental grace period feature

Supplemental Grace Period

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. As soon as the 1001st license was used, the 15-day supplemental grace period (SPG) started, to allow you time to evaluate your license needs. Your users can continue to connect without any disruption of service. You should start evaluating your licensing needs now. Do not wait until the supplemental grace period runs out. Think about buying more licenses in addition to the 1000 you bought initially.

d15 Fifteen days later (day 15) the supplemental grace period 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 supplemental grace period until you purchase and install more licenses.

Overdraft and supplemental grace period availability

The following table lists the support for license overdraft and supplemental grace period for each product. For more information, see Products and license models.

On-premises product License type 10% Overdraft Supplemental Grace Period (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

Citrix on-premises subscription for annual and term-based retail licenses

Citrix launched a new on-premises, term-based license type for new and existing customers.

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 conversions.

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 will expire.

This article describes how an on-premises subscription license expires, continued access period after expiration, and how you can extend your license subscription.

Before license expiration

For products that are automatically renewed each month, Citrix does not send notifications before expiration.

For products that are not automatically renewed, Citrix notifies you at certain intervals when your existing subscription approaches expiration. These notifications alert you to extend the subscription and avoid service interruption.

After expiration: Continued access period for 30 days

When your on-premises subscription license expires, Citrix provides you with additional 30 days of continued access period to extend your subscription.

If you purchase licenses that have a 12 month contract, the license contract includes 12 months + 1 additional month (30 days) expiry date. One additional month or 30 days are added to the license contract for continued access. You can use these 30 days to repurchase subscription licenses, allocate, and install before the original subscription license expires.

License expires at the end of 30 days of continued access period, if not renewed, the product gets into an unlicensed state with limited capabilities.

Example: If you purchased one year on-premises subscription license on 21 Oct 2020 your license will expire at 12:01 of 22 Nov 2021.

When your on-premises subscription expires after the consuming the additional 30 days, no new connections are allowed after 12:01 of 22 Nov 2021. Existing users are not impacted, however if users log off or disconnect they are not allowed to reconnect.

Note:

All on-premises subscription, annual and other term-based retail licenses include this additional 30 days built into the license expiration date.

Extend on-premises subscription licenses

The Citrix Auto-Renewal program is the default renewal program for all on-premises subscription licenses. On-premises subscriptions licenses are enrolled in the Auto-Renewal program. To learn more about the Auto-Renewal Program visit https://www.citrix.com/en-in/buy/licensing/citrix-cloud-services-renewals.html.

To extend your on-premises license subscriptions, visit https://www.citrix.com/en-in/buy/.

FAQs

  • Will on-premises subscription licenses work with existing perpetual licenses on the same server?

    Yes, within the guidelines of existing license server operation. Customers must add new term license file to the license server.

    Term or subscription licensing will not have a negative impact on delivering the on-premises subscription licenses to a customer’s existing environment, provided the product version (Virtual Apps / Virtual Apps and Desktops), edition (Standard, Advanced, Premium), and type (User/Device, Concurrent) are the same. For example:

    • Virtual Apps and Desktops Premium Concurrent perpetual + Virtual Apps and Desktops Premium Concurrent term will have no issues.

    • Virtual Apps and Desktops Premium Concurrent perpetual + Virtual Apps and Desktops Premium User/Device term. This license combination is non-standard and requires consideration and additional configuration (may not be optimal for license utilization).

    • Virtual Apps and Desktops Premium Concurrent perpetual + Virtual Apps and Desktops Advanced User/Device term. This license combination is non-standard and not advisable. Requires customer to have multiple sites or farms to use all purchased licenses.

  • Will the XenApp farm, Cirtrix Virtual Apps, Citrix Virtual Apps & Desktops stop accepting connections?

    Yes. No new connections are allowed after the license expires. Existing connections would not be impacted until users disconnect, logoff or reset.

  • Will there be a supplemental grace period (SGP) of 15 days or does that only apply to perpetual licenses?

    No. There is no grace period for license expiration. An extra month is added into the expiration date for customers to install repurchased licenses.