| Date | Version | Description |
| 01 Oct 2013 | 1.0.0 | First Public Release. |
| 30 Oct 2013 | 1.6.1 | Added Offline Capability. |
| 20 Nov 2013 | 1.8.2 | Update. |
| 07 May 2015 | 2.1.12 | Update. |
| 12 May 2015 | 2.1.13 | Update |
| 29 May 2015 | 2.1.14 | Update |
| 27 July 2015 | 2.1.15 | Update |
| 17 Sept 2015 | 2.1.16 | Update |
| 27 April 2016 | 2.1.17 | Update |
| 02 August 2016 | 2.2.1 | Update |
| 28 Aug 2017 | 2.2.4 | Update. |
| 28 Jan 2019 | 3.4.0 | Update. |
Version 3.4.0
- Update: General update to bring in line with 3.4.x library.
Version 2.2.4
- Update: Added example code for calling NSLGetVMInfo function.
- Update: Misc. bugfixes..
Version 2.2.1
- Added support for network licensing daemon.
- Added handling of bad image format exception for filechck DLL.
Version 2.1.17
- Added support for NSLGetLicenseInfo function - returns license type and activation type.
- Added support for username parameter in NSAAppStart() and NSAAppStop().
Version 2.1.16
- Update: Added filechck version menu item.
- Update: Determination of error code messages from filechck.
- Update: Minor bugfixes.
Version 2.1.15
- Fixed Bug - Correct behaviour on privacy opt-out.
- Fixed Bug - Correct error reporting.
Version 2.1.14
- NSLHelloWorld() deprecated by NSLTestConnection().
Version 2.1.13
- Fixed Bug - Correct ordering of 'Build' and 'Edition' in calls to NSASysInfo.
Version 2.1.12
- Fixed Bug - Correct HTML encoding of registration data.
- Fixed Bug - Compatibility with V2.1.x filechck.
Version 1.8.2
- Fixed Bug - Added calls to NSLFree where appropriate.
Version 1.6.1
- Added Offline Capability
Version 1.0.0
- First Public Release