K2 Product Releases and Build Numbers

This article lists K2 product releases, the release dates and build numbers per release, as well as links to the release notes for each release. (By default, only the currently-supported versions of K2 product releases are displayed; you can click the "Show unsupported versions..." link to expand the listing to show unsupported versions.)

For each K2 release, there is an associated build number. These numbers can be seen in the installer, in the download from Nintex Customer Central, as well as in the Add/Remove programs item.

Note: In a distributed environment, all K2 components installed on the various machines in the environment must be on the same release version. For more information, please see KB000426. For instructions on determining what version of K2 is installed, please see KB001893.

K2 Cloud
Current Version
Release Build Number Release Notes Release Date
K2 Cloud (Update 15) 5.1015.1000.x What's New in K2 Cloud Update 15 January 2021
K2 Five
Supported Versions
Release Build Number Release Notes Release Date
K2 Five (5.4) 5.0005.1000.x KB003510 June 2020
K2 Five (5.3) 5.0004.1000.x KB002966 May 2019
K2 Five (5.2) 5.0003.1000.x KB002606 October 2018
K2 blackpearl and K2 smartforms
Unsupported Versions
Release Build Number Release Notes Release Date
4.7 December 2019 Cumulative Update * KB003413 December 2019
4.7 March 2018 Cumulative Update * KB002261 March 2018
4.7 November 2017 Cumulative Update * KB002077 November 2017
4.7 August 2017 Cumulative Update * KB001987 August 2017
4.7 May 2017 Cumulative Update * KB001888 May 2017
4.7 4.16060.2000.x KB001745 September 2016
4.6.11 4.12060.1731.x KB001735 September 2015
4.6.10 4.12060.1690.0 KB001700 June 2015
* Cumulative Updates do not change the installed build number. To determine which CU is installed, please see How to determine the installed K2 software version, Cumulative Updates, and Fix Packs
K2 blackpearl K2 smartforms
Release Build Number Release Notes Release Date Release Build Number Release Notes Release Date
4.6.9 4.12060.1640.x KB001640 February 2015 4.6.9 4.12165.1650.x KB001650 February 2015
4.6.8 4.12060.1600.0 KB001600 August 2014 1.0.7 4.12165.1635.0 KB001635 August 2014
4.6.7 4.12060.1590.0 KB001590 March 2014 1.0.6 4.12165.1625.0 KB001625 March 2014
4.6.6 4.12060.1560.0 KB001560 July 2013 1.0.5 4.12165.1605.0 KB001605 December 2013
4.6.5 4.12060.1550.0 KB001550 April 2013 1.0.4 4.12165.1595.0 KB001595 September 2013
4.6.4 4.12060.1540.0 KB001540 December 2012 1.0.3 4.12165.1585.0 KB001585 July 2013
4.6.3 4.12060.1530.0 KB001530 October 2012 1.0.2 4.12165.1575.x KB001575 May 2013
4.6.2 4.12060.1520.0 KB001520 August 2012 1.0.1 4.12165.1565.0 KB001565 October 2012
4.6.1 4.12060.1500.0 KB001500 June 2012 1.0 4.12165.1.0 KB001555 July 2012
4.6 4.12060.1.0 KB001450 April 2012        
4.5 4.10060.1420.0 KB001420 December 2011        
4.5 4.10060.1390.0 KB001390 November 2011        
4.5 4.10060.1370.0 KB001370 July 2011        
4.5 4.10060.1350.0 KB001350 June 2011        
4.5 4.10060.1320.0 KB001320 April 2011        
4.5 4.10060.1290.0 KB001290 March 2011        
4.5 4.10060.1230.0 KB001230 November 2010        
4.5 4.10060.1200.0 KB001200 October 2010        
4.5 4.10060.1170.0 KB001170 September 2010        
4.5 4.10060.1140.0 KB001140 July 2010        
4.5 4.10060.1110.0 KB001110 July 2010        
4.5 4.10060.1090.0 KB001090 May 2010        
4.5 4.10060.1070.0 KB001070 May 2010        
4.5 4.10060.1040.0 KB001040 April 2010        
4.5 4.10060.1.0 * April 2010        
0807 4.8210.x.x * October 2008 - June 2010        
0807 4.8210.2.0 * October 2008        
0803 4.8075.1.1 * April - July 2008        
0803 4.8075.1.0 * April 2008        
SP1 4.7285.1.0 * December 2007        
RTM 4.7214.1.0 * August 2007        
*Release notes are available on the Nintex Customer Central
K2 connect
Supported Versions
Release Build Number Release Notes Release Date
5.2 for SAP 5.0005.1000.x KB003509 September 2020
5.1 for SAP 5.002.1000.x KB002597 September 2018
5.0 for SAP 5.001.1000.x KB002086 November 2017
4.7.3 for SAP 4.10060.910.x KB002590 September 2018
4.7.2 for SAP 4.10060.900.x KB002085 November 2017
4.7.1 for SAP 4.10060.890.x KB000890 January 2017
4.7 for SAP 4.10060.880.0 KB000880 September 2016
4.6.11 for SAP 4.10060.860.0 KB000860 September 2015
4.6.10 for SAP 4.10060.850.0 KB000850 July 2015