This page applies to the Telerik® UI for ASP.NET AJAX suite, formerly known as RadControls for ASP.NET AJAX.
In the following table, you can find the releases that introduce builds created against the various .NET versions.
| .NET version | First build introduced in | Last build provided in |
| 2.0 | Q4 2005 | Q3 2010 SP2 (version 2010.3.1317) |
| 3.5 | Q1 2008 (2008.1.619) | R1 2023 SP1 (version 2023.1.314) |
| 4.0 | Q1 2010 (2010.1.309) | R1 2023 SP1 (version 2023.1.314) |
| 4.5 | Q2 2012 SP1 (2012.2.724) | N/A |
| 4.6 | Q2 2015 SP2 (2015.2.826) | N/A |
| 4.7+ | R2 2017 SP2 (version 2017.2.503) | N/A |
| 4.7.1 | R1 2018 (version 2018.1.117) | N/A |
| 4.7.2 | R2 2018 (version 2018.2.516) | N/A |
| 4.8 | R2 2019 (version 2019.2.514) | N/A |
| 4.8.1 | R3 2022 (version 2022.3.913) | N/A |
You can find more information on the .NET Framework Support page.
To see which assemblies from your installation to use, review the Included Assemblies help article.
For the support lifecycle of old controls versions, see the Old Versions Support Policy help article.