Access is denied when starting Conversion job in SharePoint Word Automation Service

Description:

When I was trying to convert word document to pdf in SharePoint using Powershell script (http://www.c sharpcorner.com/UploadFile/anavijai/4820/), I was getting the following error

When I was trying to convert word document to pdf in SharePoint using SharePoint object model (http://www.c-sharpcorner.com/UploadFile/anavijai/4815/), I was getting the following error

Reason:

The user doesn't have permission to access the Word Automation Service application.

How to resolve:

1. Go to Central Administration => Application Management => Manage Service Applications => Word Automation Service.
2. Select the Word Automation Service and then click on Permissions in ribbon interface.
   
   
    
3. Add the user and select Full Control.
   
   
   

Conclusion:

Once the full control is given to the user to access the word automation service the issue is resolved and I am able to convert the documents successfully.