Nintex Automation K2 Updates & Fix Packs

IMPORTANT:If you perform a reconfigure without reinstalling the fix pack, users will not be able to log into Nintex Automation Designer/Manager/Workspace/Runtime after the reconfigure completes and the below error will occur:“HTTP Error 500.19 - Internal Server Error” NOTE:  If you have client tools installed, please do a manual IIS Reset after installing the Fix Pack. Fix Pack Release Date Download Link Fix Pack 01 21 May 2025 Contact Support for this Fix Pack Fix Pack 02 12 June 2025 Contact Support for this Fix Pack Fix Pack 03 8 July 2025 Contact Support for this Fix Pack Fix Pack 04 15 July 2025 Contact Support for this Fix Pack Fix Pack 05 12 August 2025 Contact Support for this Fix Pack Fix Pack 06 17 September 2025 Contact Support for this Fix Pack Fix Pack 07 25 September 2025 Contact Support for this Fix Pack Fix Pack 08 15 October 2025 Download Fix Pack 08  Prerequisites and DependenciesThe Fix Packs are only comp

Issue DescriptionWhen you upgrade, there are layout and font colour changes on your SmartForm.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 08.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Note:For any of the previous Fix Packs, please contact support here (Link).List of all previous Fix Pack dates can be found here (Link) Fix Pack Release Date Download Link Fix Pack 45 14 October 2025 Download Fix Pack 45  the previous Fix Pack releases. K2 Five (5.6) must be installed first after which the latest Fix Pack must be installed. To determine which cumulative update or fix pack has previously been installed in your environment see https://help.k2.com/kb000426.       Fix Pack 1This fix pack includes the following fixes:Code Fix: An error occurs in K2 for SharePoint Registration and Activation Wizards Code Fix: Errors logged in the HostServer log for disabled usersFix Pack 2This fix pack includes the following fixes:Code Fix: Data transfer between K2 Five (5.5) and Zabbix fails Code Fix: Old K2 Workflow Task name in the K2 SmartForm gets overwritten Code Fix: Reminder email only sends once Code Fix: ‘Incorrect syntax’ error occurs Code Fix: Incorrec

Issue DescriptionWhen a new user attempts to login to K2 for SharePoint, an error occurs.Error Message:The following error occurs: “The ADFS:user@company.com could not be found.”ResolutionThe fix is available in:K2 Five (5.6) Fix Pack 45.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionWhen you access a form in SharePoint using an external ADFS, you may experience an issue where drop-down list controls do not display any values. However, when accessing the same form using the internal ADFS, the drop-down values appear correctly.ResolutionThe fix is available in:K2 Five (5.6 Fix Pack 45.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionInsecure Deserialization: Enhanced security to resolve possible unchecked manipulation, where user input was discovered to be deserialized without proper validation or sanitization.ResolutionThe fix is available in:K2 Five (5.6) Fix Pack 45.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

IMPORTANT:If you perform a reconfigure without reinstalling the fix pack, users will not be able to log into Nintex Automation Designer/Manager/Workspace/Runtime after the reconfigure completes and the below error will occur:“HTTP Error 500.19 - Internal Server Error” NOTE:  If you have client tools installed, please do a manual IIS Reset after installing the Fix Pack. Fix Pack Release Date Download Link Fix Pack 01 23 October 2024 Contact Support for this Fix Pack Fix Pack 02 30 October 2024 Contact Support for this Fix Pack Fix Pack 03 8 November 2024 Contact Support for this Fix Pack Fix Pack 04 20 November 2024 Contact Support for this Fix Pack Fix Pack 05 12 December 2024 Contact Support for this Fix Pack Fix Pack 06 7 January 2025 Contact Support for this Fix Pack Fix Pack 07 16 January 2025 Contact Support for this Fix Pack Fix Pack 08 28 January 2025 Contact Support for this Fix Pack Fix Pack 09 19 February 2025

Issue DescriptionWhen you configure a Rich Text control on a View with a height of 233px or more, a large gap appears below the text area instead of the text area expanding as expected.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 07.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you attempt to use the BrokerManagement.exe utility to change the path of a custom broker DLL and run the Configure Services too, an error occurs.Error Message:The following error occurs: “_authorizationService”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 22.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionWhen you use the system SmartObject method 'PDF Converter' then 'Create PDF From URL' in your workflow solution to generate PDFs from a URL, the output PDF will display an error if "Anonymous Access" is set to 'True' on the Form.Error Message:The following error occurs: “Server error,The control collection cannot be modified during DataBind, Init,Load, PreRender or Unload phases.”ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 06.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

IMPORTANT:If you perform a reconfigure without reinstalling the fix pack, users will not be able to log into Nintex Automation Designer/Manager/Workspace/Runtime after the reconfigure completes and the below error will occur:“HTTP Error 500.19 - Internal Server Error” Fix Pack Release Date Download Link Fix Pack 1 31 October 2023 Contact Support for this Fix Pack Fix Pack 2 5 December 2023 Contact Support for this Fix Pack Fix Pack 3 14 December 2023 Contact Support for this Fix Pack Fix Pack 4 12 January 2024 Contact Support for this Fix Pack Fix Pack 5 25 January 2024 Contact Support for this Fix Pack Fix Pack 6 1 February 2024 Contact Support for this Fix Pack Fix Pack 7 6 March 2024 Contact Support for this Fix Pack Fix Pack 8 19 March 2024 Contact Support for this Fix Pack Fix Pack 9 18 April 2024 Contact Support for this Fix Pack Fix Pack 10 13 May 2024 Contact Support for this Fix Pack Fix Pack 11 23 May 2

Issue DescriptionWhen you use the Load, Delete, or Update Method for SAP OData an error occurs.Error Message:The following error occurs: “Invalid URI segment”ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 27. Nintex Automation K2 (5.8) Fix Pack 22. Nintex Automation K2 (5.8.1) Fix Pack 07.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionWhen you create Workflows in Designer from "My Items," they are placed in the root/public folder category, but when you create other objects from "My Items," they are not visible or accessible in Designer or Runtime.ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 26. Nintex Automation K2 (5.8) Fix Pack 22. Nintex Automation K2 (5.8.1) Fix Pack 06.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you use Smart Actions with Microsoft Outlook on a Apple Macbook, the server responds with an error even when a valid workflow action is specified.Error Message:The following error occurs: “The K2 server was unable to action the workflow task,”ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 26.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you set up OAuth authentication for integration with the service via the JSSP Broker, Nintex Automation K2 does not refresh the existing Snowflake access token but instead tries to obtain a new one.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 05.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionWhen you use SmartActions with Outlook on an Apple MacBook and specify a valid Workflow action, an error occurs.Error Message:The following error occurs: “The K2 server was unable to action the workflow task”ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 05. Nintex Automation K2 (5.8) Fix Pack 21.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you have a SharePoint list with a "Multiple Lines of Text" field storing JSON data, parts of the data or JSON tags may be truncated when executing the List SmartObject getlist method (in both the tester tool and Management), resulting in the data not being returned exactly as it is stored in SharePoint.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 05. Nintex Automation K2 (5.8) Fix Pack 21.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.ConsiderationsYou need to:Edit the SourceCode.SmartObjects.Services.SharePoint.dll.config (Service Broker) and change <add key="RemoveSPNoteXMLWrapper" value="false" />

Issue DescriptionWhen you load a Form, disconnect from the network, and then perform an action that triggers a callback to the K2 Server, an error occursError Message:The following error occurs: “Undefined Error”ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 05. Nintex Automation K2 (5.8) Fix Pack 21.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you use the Worklist Control, it may occasionally stop functioning during a search for a specific item, resulting in no results being displayed and both the ‘Load 20 more’ and ‘Search More’ buttons appearing.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 05. Nintex Automation K2 (5.8) Fix Pack 21.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you attempt to download PDF files in SmartForms while using Google Chrome, you will be unable to do so due to the experimental Out-of-Process iframes (OOPIF) for PDF Viewer feature on Chrome.ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 25. Nintex Automation K2 (5.8) Fix Pack 21. Nintex Automation K2 (5.8.1) Fix Pack 05.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you refresh a Form or View when on Google Chrome, a server error occurs.Error Message:The following error occurs: ‘Asynchronous operation failsString was not recognized as a valid DateTime because the day of week was incorrect.’ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 25. Nintex Automation K2 (5.8) Fix Pack 22.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you create a Workflow schedule in Management, you are unable to edit, view or delete it, and an error occurs.Error Message:The following error occurs: ‘Object of type 'Newtonsoft.Json.Linq.JArray' cannot be converted to type 'SourceCode.SmartObjects.Services.K2Management.EventBus.Scheduler.ProcessSchedulelnfo[]'’ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 25. Nintex Automation K2 (5.8) Fix Pack 21. Nintex Automation K2 (5.8.1) Fix Pack 05.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you use the 'Navigate to URL' SmartForms action, you may discover that it is vulnerable to stored and reflected cross-site scripting (XSS) attacks.ResolutionThe fix is available in:K2 Five (5.6) Fix Pack 44. Nintex Automation (5.7) Fix Pack 25.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionWhen you move your SharePoint sites to new physical servers, some SharePoint SmartObjects may fail for certain sites.Error Message:The following error occurs: “'Version Conflict'”ResolutionThe fix is available in:K2 Five (5.6) Fix Pack 44.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix.

Issue DescriptionWhen you write custom code to open the worklist and filter by a specific process instance ID, and you pass an Int64 value instead of the expected Int32, an error occurs.Error Message:The following error occurs: “System.Int64 is not allowed for deserialization”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 20. Nintex Automation K2 (5.8.1) Fix Pack 05.Ensure you have the correct K2 version and/or Cumulative update installed. See KB001893 to see what Fix Pack level you have installed. Download the latest Fix Pack using the links in the table above for the version you require. Install the Fix Pack to apply the fix. It is recommended to clear browser cache and refresh the page.