Unable to publish / update SPD 2010 workflow

Question

May be related to SP176418.

After installing KB5002645, I'm no longer able to create nor update existing 2010 workflows using SPD 2013.

Then I tried to manually associate the workflow, only to find this:

How do I fix this issue.

Answer 1

This known issue caused by the recent security update that was installed on your SharePoint server 2016.

SharePoint workflows can’t be published because the unauthorized type is blocked after patching. The issue generates event tag “c42q0” in SharePoint ULS logs.

Firstly, I suggest you check ULS logs to see if has the "c42q0" event tag.

If so, to work around this issue, register the safe types in the Web.config file. You can look for event tag "c42q0" in ULS logs to find the blocked type. If the type and assembly are safe, add the type to the authorized list in the Web.config file.

For example:

<System.Workflow.ComponentModel.WorkflowCompiler>    
   <authorizedTypes>      
     <targetFx version="v4.0">         
       <authorizedType Assembly="Microsoft.SharePoint.WorkflowActions, Version=16.0.0.0, Culture=neutral, PublicKeyToken=null" Namespace="Microsoft.SharePoint.WorkflowActions.WithKey" TypeName="*" Authorized="True" />
   </targetFx>    
   </authorizedTypes>

Reference:

https://blog.stefan-gossner.com/2024/09/13/trending-issue-problems-with-workflows-after-applying-september-2024-cu-for-sharepoint-2016-2019-se/

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Answer 2

I'm glad to hear you solve this issue, if you have any issue about SharePoint, you are welcome to raise a ticket in this forum.

By the way, since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others.". So, I would make a brief summary of this thread.

You could click the "Accept Answer" button for this summary to close this thread, and this can make it easier for other community members to see the useful information when reading this thread. Thanks for your understanding!

[Unable to publish / update SPD 2010 workflow]

Issue Symptom:

After installing KB5002645, OP was no longer able to create nor update existing 2010 workflows using SPD 2013.

Current status:

OP solved the issue by workaround in this article.