> For the complete documentation index, see [llms.txt](https://docs.keeper.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.keeper.io/release-notes/enterprise/sso-connect/sso-connect-on-prem-17.1.4.md).

# SSO Connect On-Prem 17.1.4

Released September 29, 2026

Keeper SSO Connect On-Prem version 17.1.4 delivers critical security enhancements, administrative interface hardening, Windows environment access control improvements, and third-party library updates.

All administrators operating SSO Connect On-Prem instances are encouraged to upgrade to version 17.1.4.

### Improvements <a href="#security-and-bug-fixes" id="security-and-bug-fixes"></a>

* **KSC-535: Administrative Interface Security Hardening**\
  Implemented comprehensive protections across all management endpoints to protect administrative configuration.
* **KSC-556: SAML Endpoint Hardening**\
  Strengthened verifications on SAML authentication callbacks with trusted endpoints.
* **KSC-539: Windows File System Access Lockdown**\
  Restricted file system permissions (ACLs) on Windows installations for SSO Connect configuration, log, and keystore directories to administrative and system service accounts only.
* **KSC-557: Third-Party Component & Dependency Updates**\
  Upgraded underlying third-party dependencies to remediate reported component vulnerabilities and maintain a secure software supply chain.
* **Code Quality & Static Analysis Remediation**\
  Addressed CodeQL security findings and performed code-level optimizations to improve stability and maintainability.
* **Information Disclosure Mitigation**\
  Suppressed runtime server version banners from HTTP response headers.

### Compatibility & Upgrade Notes <a href="#compatibility-and-upgrade-notes" id="compatibility-and-upgrade-notes"></a>

* Configuration Changes: No administrative configuration or IdP schema changes are required.
* Automatic ACL Updates (Windows): Upgrading on Windows automatically updates directory permissions on existing data and log folders.
* Deployment Validation: It is recommended to perform a test sign-in with your Identity Provider (e.g., Microsoft Entra ID / ADFS, Okta, PingFederate, Keycloak) after upgrading.
* **Supported OS:** Windows Server 2022/2025, Red Hat Enterprise Linux 6.8+, Ubuntu 16.04+, openSUSE 15.0+
* **Java Runtime:** Java 17 LTS

### Update Instructions

If you are performing a regular update of SSO Connect On-Prem (from a recent version):<a class="button secondary"></a>

* Open the Admin Console and visit the privisioning tab of the node
* Download, unzip and run the installer


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