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docs(licensing): adjust informationm for q2 release (#691)
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knowledge-base/common-upgrade-trial-to-licensed-version-telerik-ui-aspnet-ajax.md

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| Version | all |
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## Description
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This article explains how to replace the trial assembly with a paid, licensed assembly.
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This article explains how to activate a licensed copy of Telerik UI for ASP.NET AJAX after using a trial version, based on the version you're working with.
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## Cause
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The trial version of Telerik UI for ASP.NET AJAX is intended for evaluation purposes. Upon deciding to use the product for development, it is necessary to upgrade to a licensed version. The process involves manually replacing the trial assemblies with those from the licensed package.
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The trial version of Telerik UI for ASP.NET AJAX is intended for evaluation purposes. Once you decide to use the product for development, you must activate or upgrade to a licensed version. Starting with the 2025 Q2 release, Telerik has introduced a unified distribution for trial and commercial packages, simplifying this process.
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## Solution
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### For Telerik UI for ASP.NET AJAX 2025 Q2 and later
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Telerik UI for ASP.NET AJAX now uses a **unified package** for both trial and licensed users. You do **not need to download a separate licensed package**. Instead, you activate your license with a key file.
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1. Ensure you have the 2025 Q2 (or later) version installed.
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2. Add or update your license key file as described in the [Setting Up Your License Key File](https://docs.telerik.com/devtools/aspnet-ajax/licensing/license-key) guide.
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3. Clean and rebuild your project to ensure the license is applied correctly.
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>tip If you're still seeing trial messages after applying the license key, refer to the [Licensing FAQ](https://docs.telerik.com/devtools/aspnet-ajax/licensing/licensing-faq) for troubleshooting guidance.
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### For Telerik UI for ASP.NET AJAX versions prior to 2025 Q2
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In older versions, the trial and licensed assemblies are separate. To upgrade:
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1. Download the licensed version of Telerik UI for ASP.NET AJAX from the [Telerik website](https://www.telerik.com/account/downloads/product-download?product=RCAJAX).
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2. Follow the instructions detailed in the documentation to upgrade from a trial to a licensed version. The key steps involve removing the trial assemblies from your project and adding the licensed ones. Refer to the [Upgrading a Trial to a Developer License or to a Newer Version](https://docs.telerik.com/devtools/aspnet-ajax/upgrade-compatibility/upgrading-instructions/upgrading-a-trial-to-a-developer-license-or-to-a-newer-version#upgrade-from-trial-to-licensed-version-of-telerik-ui-for-aspnet-ajax) section.
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3. Ensure all references to the trial assemblies in your project are updated to point to the licensed assemblies.
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2. Remove all references to the trial assemblies from your project.
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3. Add references to the licensed assemblies from the downloaded package.
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4. Follow the detailed steps in the [Upgrading a Trial to a Developer License or to a Newer Version](https://docs.telerik.com/devtools/aspnet-ajax/upgrade-compatibility/upgrading-instructions/upgrading-a-trial-to-a-developer-license-or-to-a-newer-version#upgrade-from-trial-to-licensed-version-of-telerik-ui-for-aspnet-ajax) documentation.
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>tip You should also uninstall the trial version from your system to avoid mixing assemblies.
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## See Also
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- [Getting Tired of Seeing Trial Messages in Your ASP.NET AJAX Application?](https://www.telerik.com/blogs/getting-tired-of-seeing-trial-messages-in-your-asp-net-ajax-application) - A blog post providing additional insights on transitioning from trial to licensed versions.
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- [Installation - Installing the Controls](https://docs.telerik.com/devtools/aspnet-ajax/getting-started/installation-installing-the-controls) - Official documentation on how to install Telerik UI for ASP.NET AJAX.
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- [Setting Up Your License Key File](https://docs.telerik.com/devtools/aspnet-ajax/licensing/license-key)
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- [Licensing FAQ](https://docs.telerik.com/devtools/aspnet-ajax/licensing/licensing-faq)

upgrade-compatibility/upgrading-instructions/upgrading-a-trial-to-a-developer-license-or-to-a-newer-version.md

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This article explains how to upgrade the version of the Telerik® UI for ASP.NET AJAX controls and how to switch from a Trial to a Developer license.
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## Unified Distribution Starting with 2025 Q2
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Starting with the 2025 Q2 release, Telerik introduced a unified distribution for both trial and commercial packages of its UI libraries, including Telerik UI for ASP.NET AJAX. This change simplifies the upgrade and installation process:
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* A single package is now used for both trial and licensed users.
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* Access is controlled via a license key file.
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* There is no need to download separate trial or commercial versions.
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This unified model provides a streamlined and consistent experience for all users.
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For setup instructions and more details, refer to:
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* [Setting Up Your License Key File]({%slug licensing/license-key%})
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* [Licensing FAQ]({%slug licensing/licensing-faq%})
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>warning Starting with the 2025 Q1 release, the trial Telerik AJAX components require activation with a license key to function without interruption. For more information regarding the licensing review the
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> [Setting Up Your License Key File]({%slug licensing/license-key%}) and [FAQ]({%slug licensing/licensing-faq%}).
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## Upgrade From Trial to Licensed Version of Telerik® UI for ASP.NET AJAX
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The trial version and the licensed version of UI for ASP.NET AJAX have different assemblies, this why you don't need a license key or an activation to upgrade. Instead, you must replace the trial assemblies with the licensed assemblies.
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To upgrade to a licensed version:
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Starting with the **2025 Q2 release**, Telerik UI for ASP.NET AJAX uses a **unified package** for both trial and licensed users. This means the assemblies are now the same, and your access is determined by the **license key file** you provide.
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To upgrade from a trial to a licensed version (2025 Q2 or later):
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1. Ensure you have the **2025 Q2 or later** version installed.
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2. Add or update your **license key file** to activate the licensed features. Follow the steps in [Setting Up Your License Key File]({%slug licensing/license-key%}).
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There is **no longer a need to download or replace different assemblies** when moving from trial to licensed versions.
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>tip If you're still seeing trial messages after adding the license key, double-check that the key is correctly embedded and loaded at runtime. See [Licensing FAQ]({%slug licensing/licensing-faq%}) for troubleshooting help.
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### For versions **prior to 2025 Q2**
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The trial and licensed versions use **different assemblies**, so the upgrade process is different:
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1. Download the licensed version of UI for ASP.NET AJAX.
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1. Follow the steps in the [Upgrade to a Newer Version of Telerik® UI for ASP.NET AJAX](#upgrade-to-a-newer-version-of-telerik-ui-for-aspnet-ajax) section to delete the trial assemblies and replace them with the developer versions.
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2. Follow the steps in the [Upgrade to a Newer Version of Telerik® UI for ASP.NET AJAX](#upgrade-to-a-newer-version-of-telerik-ui-for-aspnet-ajax) section to delete the trial assemblies and replace them with the licensed ones.
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>tip You should delete (or uninstall) the Trial version from your machine before upgrading to the licensed version. Doing so eliminates the chance of trial assemblies still making it into the project references or even production.
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>tip If you are getting trial errors similar to "*Thank you for using the Trial Version of Telerik® UI for ASP.NET Ajax to build more powerful applications faster. Purchase the Commercial Version now to get access to all product updates and the Telerik expert support*"
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>tip If you are getting trial errors similar to "*Thank you for using the Trial Version of Telerik® UI for ASP.NET Ajax to build more powerful applications faster. Purchase the Commercial Version now to get access to all product updates and the Telerik expert support*"
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or "*Telerik.Web.UI 201X.X.XXX.XX trial version. Copyright Telerik © 2002-201X. To remove this message, please purchase a developer version.*" check out the dedicated [Getting tired of seeing trial messages in your ASP.NET AJAX application?](https://www.telerik.com/blogs/getting-tired-of-seeing-trial-messages-in-your-asp-net-ajax-application) blog post.
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## See Also

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