Access Denied when we start SharePoint 2010 approval workflow

Error:

Access Denied when we start SharePoint 2010 approval workflow

Troubleshooting:

• From the workflow reports I found an error  -" The workflow could not update the item, possibly because one or more columns for the item require a different type of information."
• Created a test list without content 
• Got the same error on all ootb approval workflow
• Disabled content approval on the list, still got the same issue
• During troubleshooting found – "Update the approval status after the workflow is completed (use this workflow to control content approval)" enabled on the workflow
• First disabled it on test workflow as we already have content approval enabled for the list
• Checked workflow behavior
• It worked successfully, so chnaged and applied the same settings to prod workflow
• Once all testing done successfully on test list, implemented the same settings to actual list 

Solution and Cause:

• "Update the approval status after the workflow is completed (use this workflow to control content approval)" enabled on the workflow
• Workflows started working by removing check box option from this option