Nintex Automation K2 Updates & Fix Packs

Important Security Update:An important security hardening update was addressed in Fix Pack 01. We strongly recommend that all customers upgrade to this version or a later version to ensure you benefit from this security enhancement.Deprecated functionality and componentsGoogle Chrome intends to deprecate and remove XSLT support from the browser for security reasons. As a result, you may need to migrate your code before support is removed in November 2026.Fix Pack 02 contains the XSLT support for Nintex Automation K2 (5.9.1). If you cannot install the fix pack on time, you can use a workaround described in XSLT Deprecation in Google Chrome Browser | Community..NET 10 Support Now AvailableInstaller Nintex Automation K2 (5.9.1) (5.0010.2000.1) is now available here (LINK) and includes support for .NET 10.Please ensure that Fix Pack 03 is also installed, as it includes additional .NET 10 support. IMPORTANT:If you perform a reconfigure without reinstalling the fix pack, users will not be ab

Issue DescriptionWhen you enter content that exceeds the available field length in Workflow Designer, a horizontal scroll bar is displayed at the bottom of the field. However, the scroll bar height and behavior is inconsistent between versions.ResolutionThe fix is available in:Nintex Automation K2 (5.9.1) Fix Pack 04.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 Security Update:An important security hardening update was addressed in Fix Pack 33. We strongly recommend that all customers upgrade to this version or a later version to ensure you benefit from this security enhancement.Deprecated functionality and componentsGoogle Chrome intends to deprecate and remove XSLT support from the browser for security reasons. As a result, you may need to migrate your code before support is removed in November 2026.Fix Pack 35 contains the XSLT support for Nintex Automation K2 (5.8). If you cannot install the fix pack on time, you can use a workaround described in XSLT Deprecation in Google Chrome Browser | Community..NET 10 Support Now AvailableInstaller Nintex Automation K2 (5.8) (5.0009.1000.1) is now available here (LINK) and includes support for .NET 10.Please ensure that Fix Pack 35 is also installed, as it includes additional .NET 10 support. IMPORTANT:If you perform a reconfigure without reinstalling the fix pack, users will not be able t

Issue DescriptionWhen you are creating or editing a workflow in the Designer, the Operator filter for SmarObjects under Functions is not visibleResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 36. Nintex Automation K2 (5.9.1) Fix Pack 04.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 Security Update:An important security hardening update was addressed in Fix Pack 13. We strongly recommend that all customers upgrade to this version or a later version to ensure you benefit from this security enhancement. Deprecated functionality and componentsGoogle Chrome intends to deprecate and remove XSLT support from the browser for security reasons. As a result, you may need to migrate your code before support is removed in November 2026.Fix Pack 14 contains the XSLT support for Nintex Automation K2 (5.9). If you cannot install the fix pack on time, you can use a workaround described in XSLT Deprecation in Google Chrome Browser | Community..NET 10 Support Now AvailableInstaller Nintex Automation K2 (5.9) (5.0010.1000.1) is now available here (LINK) and includes support for .NET 10.Please ensure that Fix Pack 15 is also installed, as it includes additional .NET 10 support. IMPORTANT:If you perform a reconfigure without reinstalling the fix pack, users will not be able

Issue DescriptionWhen you install Fix Pack 34 on an environment where the database is not named K2, an installation error occurs.Error Message:The following error occurs: “Script execute failed: System.Exception: Script execution exception: System.Data.SqlClient.SqlException: Invalid object name 'K2.SmartBroker.ServiceType'.”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 35.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 Condition action ‘WFIfElseAdapter’, it has no conversion mapping and falls back to a generic placeholder step instead of converting to a K2 Decision.ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 15.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 change the Data Source of a view generated by K2 for SharePoint, the original ListId remains referenced by the view.The original SmartObject linked to the previous Data Source remains associated with the view. Instead of displaying only the current view and its corresponding SmartObject, the view displays all folders from the original SmartObject.ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 15. Nintex Automation K2 (5.9.1) Fix Pack 04.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 DescriptionThis fix pack updates outdated packages to address known CVE’s (Common Vulnerabilities and Exposures).ResolutionThe fix is available in:Nintex Automation K2 (5.9.1) Fix Pack 03. Nintex Automation K2 (5.9) Fix Pack 15. Nintex Automation K2 (5.8) Fix Pack 35.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 upload files larger than 1 MB, an error occurs.Error Message:The following error occurs: “Error reading HTTP body”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 34. Nintex Automation K2 (5.9) Fix Pack 15.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 Tab key to navigate a form and select a value in a drop-down list, pressing Tab does not submit the selection. Instead, focus moves to the browser, requiring you to tab through the browser controls before returning to the form. On the second attempt, the selection is submitted and focus moves to the next control.ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 14.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 migrate from Exchange Web Services (EWS) to Microsoft Graph, emails sent from a Distribution List may no longer be delivered successfully.Error Message:The following error occurs:“"Error","General","1","GeneralErrorMessage","MsGraphMessageDestination","1 SourceCode.MessageBus.MsGraphDestination: Email Send Falied, Error: Status Code: NotFoundMicrosoft.Graph.ServiceException: Code: MailboxNotEnabledForRESTAPIMessage: The mailbox is either inactive, soft-deleted, or is hosted on-premise.”ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 14. Nintex Automation K2 (5.9.1) Fix Pack 03.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 your environment, button icons may no longer display on Runtime Forms that use the legacy responsive themes (Blue Void, Grey Void, or Lithium).ResolutionThe fix is available in:Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you deploy or validate new or existing workflows, you may encounter Application Lifecycle Management (ALM) errors on the Task Reminder step because the To field in the task recipient email is now validated as a required value.ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 14. Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you save a document as a PDF, the operation may fail and display an error message.Error Message:The following error occurs: “'The PDF could not be saved' "Invalid length for a Base-64 char array or string.”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 34. Nintex Automation K2 (5.9) Fix Pack 14. Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you run the Refresh All operation for SharePoint, an error may occur and prevent the operation from completing successfully.Error Message:The following error occurs: “Error converting data type nvarchar to datetime.”ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 34.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.

DescriptionThis Fix Pack introduces Microsoft Graph support for email functionality, enabling integration with modern Microsoft 365 authentication and Exchange Online services.This enhancement extends Microsoft Graph support to the following areas:Workflow Mail Events Workflow Task Notification Emails SmartForms Email Actions K2 Studio (thick client) Mail Events Exchange Online integrationResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 34.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.Additional InformationNintex Help for latest version of K2:https://help.nintex.com/en-US/nintexautomation/userguide/current/Content/K2-Management-Site/Feature…Microsoft article:Retirement of Exchange Web Se

Issue DescriptionWhen you double-click an inline function added to the To field of a mail event, the SmartField Composer may take a longer time to open.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 34. Nintex Automation K2 (5.9) Fix Pack 14. Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you migrate to SPFx, document upload workflows may start duplicate instances for previously uploaded documents and stop triggering for newly uploaded documents. Duplicate workflow events may also occur.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 34.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 apply formatting to input controls such as Picker, Drop-Down, Text Box, and Text Area controls, the configured format may not be applied consistently to watermark text at runtime. As a result, the watermark for some controls may be displayed using different formatting, causing the form to appear inconsistent.ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 13. Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.

Issue DescriptionWhen you upgrade and reconfigure Workflow email notifications to use Microsoft Graph instead of Exchange Web Services (EWS), all Workflow email steps fail after the configuration is completed.Error Message:The following error occurs:“The request body must contain the following parameter: 'grant_type'.”ResolutionThe fix is available in:Nintex Automation K2 (5.9) Fix Pack 13. Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.ConsiderationsWhen you copy HTML into K2 Studio, ensure that the HTML is correctly formatted before saving or deploying your Workflow.HTML elements that contain line breaks within their opening tag may not be parsed correctly. As a resu

Issue DescriptionWhen you create right-to-left (RTL) rich text content, list structures and other formatting elements do not display correctly.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 33.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.ConsiderationsWhen authoring content in right-to-left (RTL) mode, if you want to insert a variable at the end of the text, first press the Space bar to create an empty space and position the cursor correctly. You can then insert the variable, which will appear adjacent to the surrounding text as expected.

Issue DescriptionWhen you configure a workflow to start on the "Item Added" event in SharePoint Online lists or libraries, the workflow does not start as expected.ResolutionThe fix is available in:Nintex Automation K2 (5.8) Fix Pack 33.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.Useful InformationThere is a new optional input property on the SharePoint Helper Methods SmartObject, Process SharePoint Refresh All List Webhooks, called RefreshAll. This is set to 'false' by default. If set to 'true' it will refresh all list subscriptions and not just expired ones.

Issue DescriptionImplemented enhancements to improve validation and handling of server-side requests.ResolutionThe fix is available in:Nintex Automation K2 (5.9.1) Fix Pack 01. Nintex Automation K2 (5.9) Fix Pack 13. Nintex Automation K2 (5.8) Fix Pack 33. Nintex Automation (5.7) Fix Pack 29.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 modify the “To” recipient section in the email reminder configuration, the changes may sometimes be validated successfully, while other times they result in errors which prevent the Workflows from being redeployedError Message:The following error occurs:“The "Task" step's Reminders tab has one or more empty To fields”ResolutionThe fix is available in:Nintex Automation K2 (5.9.1) 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. It is recommended to clear browser cache and refresh the page.