Before you install 9.1.15, ensure your environment meets the Ivanti Supported Platforms criteria: Noteworthy Changes - Ivanti
: Starting with 9.1.15, certain legacy configurations were deprecated. Administrators must remove these settings before upgrading to ensure the installation doesn't fail.
Pulse Secure 9.1.15 (also known as 9.1R15) introduced several "Noteworthy Information" updates that affect how the software functions:
: This version acts as a bridge to the new Ivanti Secure Access Client (version 22.x). If your current client is older than 9.1.15, it may not automatically prompt you to upgrade to the newer Ivanti-branded versions.
: This release addressed multiple "Fixed Issues" (PRs) and improved security hardening to protect against evolving threats. System Requirements & Compatibility
: Most users receive this client by logging into their organization's SSL VPN gateway (e.g., https://yourcompany.com ). The server can automatically push the 9.1.15 client to your machine upon login.