Project Server Workflow Failing To Start

Recently we came across an issue where the Projects were not getting created as Project Server workflow failing to start.

We were getting below error in the Project Server queue while creating new Project.

Error:

==========================

WorkflowExceptionStartingWorkflow (35115). Details: id=’35115′ name=’WorkflowExceptionStartingWorkflow’ uid=’7548e18d-40a3-e511-9433-005056af372c’.
•Error:
◦WorkflowCannotStartWorkflow (35100). Details: id=’35100′ name=’WorkflowCannotStartWorkflow’ uid=’7648e18d-40a3-e511-9433-005056af372c’.
•Queue:
◦GeneralQueueJobFailed (26000) – WorkflowStartWorkflow.WorkflowStartWorkflowMessage. Details: id=’26000′ name=’GeneralQueueJobFailed’ uid=’7748e18d-40a3-e511-9433-005056af372c’ JobUID=’13fc497f-40a3-e511-9428-005056af3740′ ComputerName=’87667dbd-2100-4cde-9290-80bdeddff07d’ GroupType=’WorkflowStartWorkflow’ MessageType=’WorkflowStartWorkflowMessage’ MessageId=’1′ Stage=” CorrelationUID=’ea864b9d-ca82-0043-715d-a0011883a0b6′. For more details, check the ULS logs on machine 87667dbd-2100-4cde-9290-80bdeddff07d for entries with JobUID 13fc497f-40a3-e511-9428-005056af3740.

===========================

Resolution:

This issue occurs if the workflow manager service is not registered correctly or if there is some issue with it. To fix the issue we need to re-register the Workflow Manager service. You cannot un-register the workflow service which is already registered and hence I had to use the –Force parameter to forcefully register the workflow service. You will get error “Failed to register because the farm or partition is already registered with a workflow service” if you don’t use the –Force parameter.

Register-SPWorkflowService -SPSite “http://Servername/pwa” -WorkflowHostUri “http://servername:12291” -AllowOauthHttp –Force

Hope this helps!

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