In order to develop SharePoint 2007 workflows in Visual Studio 2008 on 64 bit, I would create a new (non-SharePoint) Workflow project. Then, I would add the appropriate onWorkflowActivated activities, etc.

I have migrated some workflow projects from VS2008 to VS2010 and they seemingly worked fine. I say seemingly because they were able to compile correctly, run correctly, and I was able to modify all the existing activities without problems.

Now, I am starting a new workflow project and I performed my normal routine, but the SharePoint activites were not on the Toolbox. I enabled all items to be shown and the SharePoint Items were greyed out (Assembly version, not the tab for 14). I unloaded the project and compared it to a project created with 2008, and I was missing the SharePoint workflow project template guid. So, I added it and could no longer load the project.

Besides working on 32 bit or developing in 2008, does anyone know any other work arounds?

  • Have you found any information regarding this issue? Do you have some sample VS2010 workflow projects targeted for MOSS 64bit? I have the same issues – Anonymous Sep 29 '10 at 0:45
  • Unfortunately, no. I am doing WF dev in 2008. – MBSurf Oct 1 '10 at 12:51

See this article -> http://www.dennispoint.com/2010/10/developing-sharepoint-2007-workflows-in.html, it will solve your problem.


I believe you can only do 32bit development for SharePoint 2007 in Visual Studio 2010, see this post from last year:


There could be many reasons for this, but I believe MS want people to fully move to 64 bit-only, SP2010 environments asap.

  • Well, in the article is says "Experience for developing for previous release of SharePoint ... with Visual Studio 2010 has not changed compared to Visual Studio 2008. " Unfortunately, it has. In 2008, while SharePoint 2007 workflow projects in a 64bit environment weren't supported, I could still create a standard Workflow project with all the SharePoint toolbox items visible. In 2010, I can create a standard WWF 3 project, but the SharePoint 2007 toolbox items do not show in the toolbox. – MBSurf Oct 1 '10 at 12:51

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.