Error: An error occurred while calling service.Possibly caused by authentication failure Shelby Murrell February 19, 2019 18:33 Updated Follow Description Error on running a webservice:An error occurred while calling service. Exception has been thrown by the target of invocation. Possibly caused by authentication failure. Applies to Workflow 10.x Cause Winshuttle Worker service may have stopped. Solution Restart Worker service Additional Information Error: No worker is available to handle the request Related articles Error: Exception has been thrown by the target of an invocation Winshuttle.Studio.Office.Addin has fired an exception Error: No worker is available to handle the request GUI scripting and running on Server Startup Error: Exception: Error: ****MyDocs\Winshuttle\TRANSACTION\Data Comments 0 comments Please sign in to leave a comment.