As long as that user ends their active session, they only need one license. Device Used. Session Launched? Concurrent License Consumed? Yes, in the morning. Yes, one session was launched. Yes, in the afternoon. No, same license. Yes, in the evening.
As you can see, there are three users, three devices, and one concurrent license consumed. Because Monica, Chandler, and Joey all launched a session during separate times under the assumption that they ended the session when they were done , they have only used one license. But why? Therefore, if I log into my environment and launch a session, the license is a user license.
This means that on the license server, I can run as many XenDesktop sites on as many devices as I would like while only consuming ONE user license. However, if I decide to launch a session on a shared device that multiple people use, Citrix notes that it's a shared device and therefore it consumes one device license.
User License Consumed? Let me explain how this works. When user 1 logs in for the first time, on PC 1, the license server will assign a user license to user 1. However, when user 1 logs off and user 2 logs on to PC 1, the license server will notice that multiple users are now logging on and using PC 1. Because of this it will reassign the earlier user license, which was assigned to user 1 to PC 1, turning it into a device license.
Now if user 1 logs onto PC 2 the license server will pick up that user 1 logs on to multiple machines and thus it will assign a user license to user 1. Unless multiple users previously used PC 2 as well, then it will continue to use a device license for PC 2 and user 1 will still be without an assigned license.
This is controlled by the MAC address of the device, which the license server keeps track of. This is in contrast to concurrent licenses, which will be checked out for the duration of the session and checked in again once the session is ended. Licenses can be revoked, when an employer leaves the company, for example, and still has a license in use 90 days.
License usage data will be updated every 15 minutes by default, while rebooting the license server will force an update as well. You will find it here:. How many licenses are needed.
A is the total number of users, B would be the total number of shared devices and finally C, the number of users that will exclusively be using those shared devices. Using this formula you can also calculate at which point it makes more sense to purchase concurrent licenses. Each time a certain Citrix product starts, it will open up a connection to the license server by checking out a so-called startup license 1. This startup license file enables Citrix products to maintain a continuous connection to the License Server.
When users connect to a Citrix product 2 , it draws licenses from the License Server. That is, the Citrix product requests to check out a license from the License Server on behalf of the user or client device 3. When the license is successfully checked out, the user can actually use the product. License programmes. Citrix offers different licensing programmes aimed at supporting any commercial enterprise, educational institution or government agency worldwide. If you would like to know more about these programmes I would suggest contacting one of your Citrix sales representatives, as they should be able to help you.
Just be aware that, at any time, you may only have one active commercial licensing programme and one active public sector licensing programme.
The link below will provide you with additional information as well:. If, for whatever reason, the Citrix License Server cannot be contacted, the users and products are protected by a grace period without any interruption or loss of functionality. To make this possible, XenDesktop stores a replica of the licensing information from the License Server, including the number and type of licenses.
As soon as the connection to the license server is lost it will enter its grace period and use the licensing information stored locally. The maximum time allowed for a grace period is usually 30 days, although this might differ slightly per product.
Citrix infrastructural components and the license server exchange heartbeat messages every five minutes to indicate to each other that they are still up and running.
When the heartbeat fails for whatever reason, the mentioned grace period will kick in using the locally cached license information as mentioned above. High availability. By default, it will rely on the grace period to kick in, as mentioned above. As of version 7. The default supplemental grace period is 15 days and during this period there is no limit on connections. A quote from Citrix on this:. Supplemental grace periods are granted per product and edition and per Subscription Advantage Eligibility date per product and only for Retail licenses.
For example, if you have two clients requesting XenDesktop Enterprise Concurrent, with different Subscription Advantage Eligibility dates, two supplemental grace periods are granted. Here you can also see the remaining time left within the grace period. FMA fac t: All Session Hosts as part of the IMA are responsible for the checkout and handling of licenses, and thus need to be able to communicate with the license server.
Getting your licenses. Getting your hands on your Citrix licenses is a simple, three-step process. In all other cases, if you want to renew or update your licenses it will be a matter of activating your order confirmation email contains instructions for activating licenses. Then allocate when asked, enter the license you wish to allocate.
Select the specific number of users you wish to deploy, and generate your license file. And finally, download save your license file and copy it to your license server using the License Management Console. The server will then read and initiate the license file. Here you will also find information with regard to edition updates, and as always contact your Citrix representative when in doubt.
FMA fact : You can also visit the Citrix Trial Center where you can get limited trial licenses to try out certain products. However, note that some licenses will only be available for registered Citrix partners. Both XenDesktop and XenApp are available in different editions. Depending on the edition you purchase, more or less specific features and functionalities will become available for you to use and configure.
Visit Citrix. Subscription Advantage, Software Maintenance. Subscription Advantage entitles you to, among other benefits, any product updates, including major and minor releases, released during your membership period.
After your initial one-year membership period expires, you may choose to renew your Subscription Advantage membership.
A Subscription Advantage membership and its associated license are distinct from your license to run the product. All licenses for retail products are permanent. If you do not renew your Subscription Advantage membership, your Citrix products will continue to work. However, while you are still entitled to software updates, you are not allowed to use, or upgrade to newer software releases next versions.
You will be able to log an unlimited number of incidents and get access to a specific set of support tools and other knowledge resources. As a bonus, this includes a discount for Citrix Synergy tickets. They just had to come up with a second name to make a clear distinction between the two.
FMA fact : Citrix also offers Appliance Maintenance, which provides technical support to diagnose and resolve issues encountered with appliance hardware with the latest upgrades for the software elements of hardware products. Malfunctioning appliances are also replaced under this agreement to minimize customer downtime. Note that all licenses within a programme must be either on call-in support or not — they cannot be mixed!
If one desires different support levels, different licensing subscriptions must be used to separate these, as well as separate license servers! Monitoring license usage. On the Licensing node in Studio you have a direct overview of the types of licenses you are using and how many licenses are actually being used at any given time.
It will tell you the license model per user, device or concurrent , which port number is used for communicating with the license server, general Site information, an expiration date, if Subscription Advantage is supported, and more. We cannot run Citrix without Microsoft, I am not telling you anything new here.
Manage delivery groups. Create application groups. Manage application groups. Remote PC Access. Virtual Apps Secure Browser. Publish content. Server VDI. User personalization layer. Remove components. Upgrade and migrate. Upgrade a deployment. Security considerations and best practices. Delegated administration. Manage security keys.
Smart cards. Smart card deployments. Pass-through authentication and single sign-on with smart cards. App protection. Virtual channel security. Federated Authentication Service. Generic USB devices. Mobile and touch screen devices.
Serial ports. Specialty keyboards. TWAIN devices. WIA devices. HDX 3D Pro. Text-based session watermark. Audio features. Browser content redirection. HDX video conferencing and webcam video compression. HTML5 multimedia redirection. Optimization for Microsoft Teams. Monitor, troubleshoot, and support Microsoft Teams.
Windows Media redirection. General content redirection. Client folder redirection. Host to client redirection. Generic USB redirection and client drive considerations.
Printing configuration example. Best practices, security considerations, and default operations. Printing policies and preferences. Provision printers. Maintain the printing environment. Work with policies. Policy templates. Create policies. Compare, prioritize, model, and troubleshoot policies. Default policy settings. Policy settings reference. ICA policy settings. HDX features managed through the registry. Load management policy settings. Profile management policy settings. User personalization policy settings.
Virtual Delivery Agent policy settings. Virtual IP policy settings. Connector for Configuration Manager policy settings. Multi-type licensing. Universal Windows Platform Apps. Connections and resources.
Local Host Cache. Virtual IP and virtual loopback. Delivery Controllers. VDA registration. Use Search in Studio. User profiles. Citrix Insight Services. Citrix Scout.
Configuration logging. Event logs. Advanced configuration. PIV smart card authentication. Network analysis. Delegated Administration and Director.
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