| Error Code | Message | Fix | | :--- | :--- | :--- | | | "Connection interrupted by server" | Server is likely newer. Downgrade the server or upgrade client. | | 12057 | "Certificate validation failed" | The server certificate is self-signed or expired. Import the root CA via the Pulse client (File > Import). | | 13401 | "Host Checker failed" | Your antivirus is blocking the Host Checker process. Add pulse.exe and nclauncher.exe to AV exclusions. | | macOS Crash | "Pulse quit unexpectedly" | You likely denied the system extension. Run sudo spctl --master-disable in Terminal temporarily. |
In the modern era of hybrid work environments, Virtual Private Networks (VPNs) have shifted from an IT luxury to a business necessity. Among the enterprise-grade solutions, Pulse Secure (now part of Ivanti) has long been a gold standard for providing SSL VPN and seamless network access. Download Pulse Secure 9.1.15
A: Yes. On a working PC, navigate to C:\Program Files (x86)\Common Files\Pulse Secure\ and copy the .msi file. However, this may violate your corporate software policy. | Error Code | Message | Fix |
| Feature | 9.1.15 (Legacy) | Newer 22.x/23.x | | :--- | :--- | :--- | | | PCS 8.3 / 9.0 / 9.1 | PCS 9.1+ & Ivanti Connect | | Windows 7 / 8.1 | Full Support | Limited / Dropped | | macOS 10.14 (Mojave) | Works perfectly | Blocked | | IT Policy Lock | Some companies freeze version due to certification | Requires recertification | | UI Simplicity | Classic interface | Modern, but heavier | Import the root CA via the Pulse client (File > Import)
If you have landed on this page searching for you are likely looking for a specific, legacy version of the Pulse Desktop Client. Whether you need this version for backward compatibility with a corporate server, legacy operating system support, or internal compliance rules, you are in the right place.
A: Partially. Core VPN works, but the Host Checker (endpoint compliance) may fail. For full Windows 11 support, upgrade to Ivanti Secure Access 22.6 or newer.