# Compatible web application servers

The following tables provide information on the recommended and supported Web application servers for the Talend server modules.

In the following documentation:

* Recommended: designates an environment recommended by Qlik based on experience and customer usage.
* Supported: designates a supported environment for use with the listed component or service.
* Supported with limitations: designates an environment that is supported by Qlik but with certain conditions explained in notes.

## Talend Administration Center

Supported Apache Tomcat versionsSupported Apache Tomcat versions

| Tomcat version | Support type |
| --- | --- |
| 11.0.x | Recommended with limitations:<br><br><ul> <li>Tomcat 11.0.x requires the R2026-07 monthly patch or later.</li> </ul> |
| 10.1.x (from 10.1.45 and higher) | Recommended with limitations:<br><br><ul> <li>Tomcat 10.1.45 and higher require the R2025-09 monthly patch or                              later.</li> </ul> |
| 10.1.44 | Recommended with limitations:<br><br><ul> <li>Tomcat 10.1.44 requires the R2025-08 monthly patch or later.</li> </ul> |
| 10.1.43<br><br>10.1.42 | Recommended with limitations:<br><br><ul> <li>Tomcat 10.1.42 and 10.1.43 require the R2025-06 monthly patch or                              later.</li> </ul> |
| 10.1.40 | Recommended with limitations:<br><br><ul> <li>Tomcat 10.1.40 requires the R2025-05 monthly patch or later.</li> </ul> |
| 9.0 | Recommended with limitations:<br><br><ul> <li>Tomcat 9.0 requires the R2024-04 monthly patch or earlier.</li> </ul> |
| 8.5 | Supported with limitations:<br><br><ul> <li>Tomcat 8.5 requires the R2024-04 monthly patch or earlier.</li> </ul> |

For more information about upgrading the Apache Tomcat server, see [Upgrading Apache Tomcat used by Talend Administration Center](https://help.qlik.com/talend/en-US/upgrade-tomcat-with-tac/8.0/upgrading-apache-tomcat-used-by-talend-administration-center).

## TLS support

TLS 1.2 is supported with Tomcat. For more information, see the Tomcat documentation that corresponds to your version, for example [SSL/TLS Configuration How-To](https://tomcat.apache.org/tomcat-10.1-doc/ssl-howto.html) for Tomcat 10.1.