SharePoint Designer 2010 Workflow does not Start Automatically, when an item is created or modified

Scenario:-

           Create a new "List Workflow" through Sharepoint Designer 2010 and set the workflow setting with Start workflow automatically when an item is create or modified.

           Then save and publish the workflow. Now goto the list and create or edit the items, the attached workflow not invoke.

Reason / Solution:-

          You may be logged into the "System Account", You need to login into another non system account user.

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