The Workflow Simulator was unable to load the workflow
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Just wanted to post this in case someone else comes across it. I was getting the following error when trying to run Workflow in the Simulator:
The Workflow Simulator was unable to load the workflow. Please ensure that you have resolved all validation errors first.
A procedure imported by 'Microsoft.VisualBasic.Activities.Compiler.dll' could not be loaded.
This is a .Net Framework issue and is referenced by the following MS note:
https://support.microsoft.com/en-us/kb/3118750
All this is kind of gobbledegook to me, but what worked for me was simply uninstalling the secruity updates 3098779 and 3097997. In other words, I went into Control Pane/Programs and Features/View Installed Updates and then uninstalled those two Windows Security updates, and then the simulator magically worked :)
f0 -
Hi Darren,
We updated the .net frame work 4.5 to 4.6 yesterday along with other sceurity patches.
We are facing the similar issues with all of the worflows in a functional site. None of the workflows are functional and a common error " Exception has been thrown by the traget of an invocation. A procedure imported by ?Microsoft.VisualBasic.Activities.compiler.dll could not be loaded". is poping up for all of he workflows.
Apprently the root cause of these errors are the same as you mentioned.
?Amit
(GE 4.2)0 -
Did uninstalling those two security updates fix the problem? 0 -
Yes,
Seems that the two MS security updates (3098779 and 3097997) were the culprit, blocking the
Microsoft.VisualBasic.Activities.Compiler.dll from executing. Manual uninstall of the security updates resolved the problem.
Thanks for posting this issue.
Amit0
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