A Long Term Supported (LTS) version is available from the Downloads page.
The current LTS version is 2.9.6.
LTS version 2.9.x was released in August of 2023 and scheduled for End of Support Life (EOSL) September 2024.
The LTS version is fully supported for 13 months, along with the latest stable version. It is highly recommended that all customers deploy the LTS version and is most suitable for customers who prefer not to upgrade more often than once a year.
To access the LTS version, from Proofpoint Data Security & Posture, select the Administration app. Select Endpoints > Downloads. Choose to download the long-term-supported-release version.