> For the complete documentation index, see [llms.txt](https://docs.nalpeiron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nalpeiron.com/zentitle2-docs/developers/the-licensing-client-c++/release-notes.md).

# Release Notes

Browse the version history and downloads for the Zentitle2 C++ SDK.

{% hint style="info" %}
Credentials to our package registry can be created in the Zentitle2 interface (Administration -> API Credentials -> Package Registry)
{% endhint %}

## v3.5.1

September 10, 2026

**Changes** 

* Aligned OpenSSL metadata and documentation with the bundled version.

Download: [Zentitle2\_SDK\_v3.5.1.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.5.1.master.40528.20260910090907/Zentitle2_SDK_v3.5.1.zip)

## v3.5.0

September 9, 2026

**Changes**

* Added application event tracking to the C++ SDK
* Added SDK version header to outgoing HTTP requests
* Required TLS 1.2 or newer for HTTP requests
* Cleared local activation data when lease refresh returns HTTP 404

**Bug Fixes**

* Fixed a MacOS JVM shutdown crash when Zentitle2Core logging is enabled

Download: [Zentitle2\_SDK\_v3.5.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.5.0.master.40480.20260909143343/Zentitle2_SDK_v3.5.0.zip)

## v3.4.0

June 26, 2026

* Added Windows x86 support

Download: [Zentitle2\_SDK\_v3.4.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.4.0.master.36693.20260630082522/Zentitle2_SDK_v3.4.0.zip)

## v3.3.0

June 24, 2026

* Handled empty and invalid API error response bodies
* Fixed case-insensitive HTTP response header lookup for API nonce
* Unified activation entitlement date-time field handling
* Updated vendored OpenSSL prebuilts to 3.4.6

Download: [Zentitle2\_SDK\_v3.3.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.3.0.master.36387.20260624123111/Zentitle2_SDK_v3.3.0.zip)

## v3.2.0

June 2, 2026

* Fixed trailing-slash path handling

Download: [Zentitle2\_SDK\_v3.2.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.2.0.master.35229.20260602051722/Zentitle2_SDK_v3.2.0.zip)

## v3.1.0

\
May 20, 2026

* Added entitlement seat usage fields: seatCount and seatsUsed

Download: [Zentitle2\_SDK\_v3.1.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.1.0.v3-1-0.34677.20260520134459/Zentitle2_SDK_v3.1.0.zip)

## v3.0.0

\
May 14, 2026

* Added structured Zentitle2Core status and error codes
* Improved clock rollback storage handling
* Updated vendored OpenSSL
* Allowed offline feature access without nonce initialization

Download: [Zentitle2\_SDK\_v3.0.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v3.0.0.master.34213.20260512104302/Zentitle2_SDK_v3.0.0.zip)

## v2.6.0

April 29, 2026

* Fixed Manual Activation entitlement metadata parsing
* Added TLS CA bundle options
* Allowed offline feature access without nonce initialization
* Improved handling of Windows Schannel TLS revocation failures

Download: [Zentitle2\_SDK\_v2.6.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.6.0.master.33552.20260429143444/Zentitle2_SDK_v2.6.0.zip)

## v2.5.0

April 2, 2026

* SDK aligned with updated Licensing API
* Structured handling added for node-locked deactivation conflicts
* Sample build validation extended to Alpine ARM64

Download: [Zentitle2\_SDK\_v2.5.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.5.0.master.32163.20260402133057/Zentitle2_SDK_v2.5.0.zip)

## v2.4.0

March 18, 2026

* SDK package layout simplified
* Complete prebuilt static SDK libraries added to the package
* OpenSSL updated and minimum supported version raised

Download: [Zentitle2\_SDK\_v2.4.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.4.0.master.31297.20260318140651/Zentitle2_SDK_v2.4.0.zip)

## v2.3.0

February 16, 2026

* MAC fingerprinting stabilized
* Secret storage limit increased to 1 MB
* Windows build uses the v142 toolset
* Usage Count features now include currentUsagePeriodStart/nextUsagePeriodStart

Download: [Zentitle2\_SDK\_v2.3.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.3.0.master.29912.20260216151214/Zentitle2_SDK_v2.3.0.zip)

## v2.2.0

January 23, 2026

* Added Alpine Linux x86\_64/amd64 support
* Fixed API nonce persistence after feature operations
* Signed ZentitleJNI.dll and Zentitle2OfflineActivation.dll

Download: [Zentitle2\_SDK\_v2.2.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.2.0.master.2278249061.20260122081057/Zentitle2_SDK_v2.2.0.zip)

## v2.1.7

December 17, 2025

* Fixed the SDK build failure on Ubuntu 22.04

Download: [Zentitle2\_SDK\_v2.1.7.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.7.master.2220324090.20251217151421/Zentitle2_SDK_v2.1.7.zip)

## v2.1.6

December 16, 2025

* Added code signing for **Zentitle2Core.dll**
* Activation client now supports explicit proxy settings
* SDK package includes refreshed helper build scripts
* Fixed VS2019 builds and curlcpp-related warnings

Download: [Zentitle2\_SDK\_v2.1.6.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.6.master.2218200451.20251216161013/Zentitle2_SDK_v2.1.6.zip)

## v2.1.5

November 19, 2025

* Added a new Schannel-based TLS backend to expand native Windows support
* Improved reliability of **state persistence** by blocking on futures.
* Expanded long-running test coverage
* Upgraded embedded **OpenJDK to 17.0.17** for the latest security fixes.
* Sample application updated at <https://github.com/Nalpeiron/samples-cpp-sdk>

Download: [Zentitle2\_SDK\_v2.1.5.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.5.master.2167872386.20251119153353/Zentitle2_SDK_v2.1.5.zip)

## v2.1.4

October 24, 2025

* Added cross‑process shared activation, introducing
* Introduced a new in-memory activation storage implementation
* Upgraded bundled crypto toolchain to OpenSSL 3.4.3

Download: [Zentitle2\_SDK\_v2.1.4.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.4.master.2098216744.20251014091324/Zentitle2_SDK_v2.1.4.zip)

## v2.1.3

August 26, 2025

* Added OpenID Token Authentication Support
* Fixed header exports for improved library integration
* Added EditionId implementation for enhanced license management
* Improved CMake integration for cross-platform builds

Download: [Zentitle2\_SDK\_v2.1.3.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.3.master.2003855950.20250826100033/Zentitle2_SDK_v2.1.3.zip)

## v2.1.2

July 03, 2025

* JNI bindings updated for compatibility with **Java 17**
* Resolved **JNI crash** caused by incorrect native memory handling
* Fixed cross-platform **system path resolution** on Unix-like systems (Linux/macOS)

Download: [Zentitle2\_SDK\_v2.1.2.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.2.master.1903823626.20250703053440/Zentitle2_SDK_v2.1.2.zip)

## v2.1.1

June 14, 2025

* JNI (Java Native Interface) binaries added for Linux Arm64 platform
* Added support for an optional `seatName` parameter for the activation
* Other small bug fixes and improvements

Download: [Zentitle2\_SDK\_v2.1.1.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.1.1.master.1855052277.20250605112157/Zentitle2_SDK_v2.1.1.zip)

## v2.0.0

May 14, 2025

**Highlights**

* **Initial public release of the Zentitle C++ SDK**\
  Complete implementation of all major API functions.\
  Full CMake-based build system for cross-platform support (Windows, macOS, Linux).
* **Initial release of Zentitle2OfflineActivation**\
  Built-in cryptography layer for secure offline token generation, signing, and validation.

Download: [Zentitle2\_SDK\_v2.0.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v2.0.0.master.1817453112.20250514145639/Zentitle2_SDK_v2.0.0.zip)

## v1.4.5

April 2, 2025

**Improvements**

* Added vcpkg support to the SDK for easier client integration
* Included Zentitle2Core library build for Ubuntu ARM64 architecture

Download: [Zentitle2\_SDK\_v1.4.5.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v1.4.5.master.1748610052.20250402132217/Zentitle2_SDK_v1.4.5.zip)

## v1.4.4

March 20, 2025

**Improvements**

* Fixed SDK build process to correctly reference the `artifacts` folder.
* Updated JNI interface to use byte arrays for passing data to secure storage, enhancing compatibility and security.

Download: [Zentitle2\_SDK\_v1.4.4.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v1.4.4.master.1726052183.20250320091452/Zentitle2_SDK_v1.4.4.zip)

## v1.4.2

March 10, 2025

**Improvements**

* Add offline activation token handling to JNI binding

Download: [Zentitle2\_SDK\_v1.4.2.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v1.4.2.master.1708143060.20250310111839/Zentitle2_SDK_v1.4.2.zip)

## v1.4.1

March 05, 2025

**Improvements**

* Add JNI binding
* Added new methods to the SDK

Download: [Zentitle2\_SDK\_v1.4.1.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/Zentitle2_SDK/v1.4.1.master.1701799953.20250305203605/Zentitle2_SDK_v1.4.1.zip)

## v1.2.1

August 20, 2024

**Improvements**

* Update encryption library
* General improvements to secret storage
* Enhance key generation security
* Remove standard output printings

Download: [libZentitle2\_v1.2.1.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/libZentitle2/v1.2.1.master.1419848973.20240820115323/libZentitle2_v1.2.1.zip)

## v1.1.0

June 17, 2024

**Improvements**

* Update API documentation
* Improve API usability

Download: [libZentitle2\_v1.1.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/libZentitle2/v1.1.0.master.1335562137.20240617160412/libZentitle2_v1.1.0.zip)

## v1.0.3

June 13, 2024

**Improvement**

* Fix incorrect printings on the standard output

Download: [libZentitle2\_v1.0.3.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/libZentitle2/v1.0.3.master.1326990855.20240611094750/libZentitle2_v1.0.3.zip)

## v1.0.2

June 11, 2024

**Improvements**

* Adding fingerprint functionality

Download: [libZentitle2\_v1.0.2.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/libZentitle2/v1.0.2.master.1316508050.20240603173344/libZentitle2_v1.0.2.zip)

## v1.0.1

June 4, 2024

**Improvements**

* Added versioning

Download: [libZentitle2\_v1.0.1.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/libZentitle2/v1.0.1.master.1227653875.20240326085057/libZentitle2_v1.0.1.zip)

## v1.0.0

June 4, 2024

Initial release

**Improvements**

* Added fingerprint functionality
* Added logger
* Added secret storage
* Added possibility to retrieve the path to the specified predefined folder

Download: [libZentitle2\_v1.0.0.zip](https://gitlab.com/api/v4/projects/47538382/packages/generic/libZentitle2/v1.0.0.master.1222271684.20240321123500/libZentitle2_v1.0.0.zip)


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