Nintex Automation K2 Updates & Fix Packs

Issue DescriptionWhen you reply to a SmartAction using Exchange Web Services (EWS), the action is processed, but the reply email is never sent, and an error is occurs.Error Message:The following error occurs in the HostServerLog: ‘”System.NullReferenceException: Object reference not set to an instance of an object.”ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 01.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 DescriptionScenario 1When you have a slider that is read-only and disabled, and you hide and then show it again, the slider becomes editable. Even when you use the Set Properties method and a disable rule, the control remains editable.Scenario 2When you have the slider control enabled, users can adjust its value by clicking anywhere along the track. When you navigate to the next section and hide the slider, then return and show it again, the slider’s previous value is lost and is reset to 0.Scenario 3When you set the slider control width at design time, it resizes to the desired width (for example, 70%). However, when you open the form at runtime, the control width resets to 100%.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 12. Nintex Automation K2 (5.9) Fix Pack 01.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 tab

Issue DescriptionWhen you view attachments in the Attachment control, PowerPoint (PPTX) icons do not display. The functionality of attachments remains unaffected, as this is a cosmetic issue.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 26. Nintex Automation K2 (5.8.1) Fix Pack 12. Nintex Automation K2 (5.9) Fix Pack 01.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 Package & Deployment (P&D) to move a package between K2 farms with SharePoint Subscription Edition, the event receivers do not come across.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 12. Nintex Automation K2 (5.9) Fix Pack 01.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 SPFx migration tool, you may encounter an errorError Message:The following error occurs: "System.Data.SqlClient.SqlException: Error converting data type nvarchar to datetime." with a site collection.”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 25. Nintex Automation K2 (5.9) Fix Pack 01.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 search for the Active Directory Group “K2 Administrators” in K2 Management to add it to a K2 Role, it does not display correctly, even though the group membership and functionality work as expected. The issue appears specific to this group, as other AD Groups display correctly.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 25. Nintex Automation K2 (5.8.1) Fix Pack 13. Nintex Automation K2 (5.9) Fix Pack 02.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 standard Worklist Control and add a filter for any date type (such as Task Start Date, Activity Start Date, or Workflow Start Date) using either a Relative Date or a Specific Date, an error occurs.Error Message:The following error occurs: “Unable to connect to server View Details.” After clicking on View Details:“Type: System.DateTime is not allowed for deserialization. trying to filter on any date”ResolutionThe fix is available in:Nintex Automation K2 (5.8) 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 use SharePoint Subscription Edition and move a package between K2 farms using Package & Deployment (P&D), the event receivers do not transfer with the package.ResolutionThe fix is available in:Nintex Automation K2 (5.8) 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 package the JSSP service with its own embedded .NET 8 runtime, you cannot update .NET independently, which means the service continues to run on the vulnerable version even when newer, patched versions are available.ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 11.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 perform multiple saves, deploys, and autosaves in the Workflow Designer,  “ghost” pop-ups may start appearing on the canvas.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 24. Nintex Automation K2 (5.8.1) Fix Pack 11.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 check server usage figures in Management under Licenses, you may notice that the numbers are lower than expected. For example, the count for workflow definitions might show 19, even though more than 30 workflows are deployed to the environment.ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 28. Nintex Automation K2 (5.8) Fix Pack 24. Nintex Automation K2 (5.8.1) Fix Pack 11.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 have SharePoint lists where some fields contain empty default values, and you try to use a workflow to update one element based on another that may also have empty values, you may encounter issues.Error Message:The following error occurs: “Cannot complete this action.Please try again.InnerException Message:”ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 10.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 multiple Editable List Views that include additional empty or blank columns, you may find that after installing the latest Fix Pack, these views no longer render correctly at runtime and a Browser Console error occurs.Error Message:The following error occurs: “Uncaught TypeError: Cannot read properties of undefined at constructTableDefinition”ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 11.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 open a workflow in the Designer (HTML5) that contains special or extended characters (such as ä, ö, ü, or é) in its name, the workflow may fail to load. During initialization, the Designer page may display and error and prevent the workflow from opening.Error Message:The following JavaScript error may occur: “URI malformed”ResolutionThe fix is available in:Nintex Automation K2 (5.8.1) Fix Pack 09. Nintex Automation K2 (5.8) Fix Pack 24.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 upgrade from Nintex Automation (5.7) to Nintex Automation K2 (5.8) an error occurs in the database.Error Message:The following error occurs: “Logged Error: Script execute failed: System.Exception: Script execution exception: System.Data.SqlClient.SqlException (0x80131904): Cannot drop the procedure, because it does not exist or you do not have permission.”ResolutionThe fix is available in:Nintex Automation (5.7) Fix Pack 28.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.ConsiderationsIn order for this fix pack to work, an IISRESET will need to be done after installation.

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. Nintex Automation (5.7) Fix Pack 28.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.ConsiderationsIn order for this fix pack to work, an IISRESET will need to be done after installation.

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. Nintex Automation K2 (5.8.1) Fix Pack 10.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.

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.