Error %1 occurred while attempting to enable the "Generate Security Audits" privilege. To grant the Generate Security Audits ...

Error %1 occurred while attempting to enable the "Generate Security Audits" privilege.
  
To grant the Generate Security Audits privilege to the Microsoft Exchange service account, open the Windows Group Policy editor.  
If the machine is not domain controller, select the Local Computer policy object.  
If it is a domain controller, select the browse  button and select the "Domain Controllers." container.  Within this container, select the "Default Domain Controllers Policy"  object.  
  Under either "Local Computer policy" or "Default Domain Controllers Policy", select the "Computer Configuration" container.  Under  the "Computer Configuration" container, select the "Windows Settings" container.  Under the "Windows Settings" container, select  the "Security Settings" container.  Under the "Security Settings" container, select the "Local Policies" container.  Under  the "Local Policies" container, select the "User Rights Assignment" container.
    Under "User Rights Assignment", double click the "Generate Security Audits" object and add the Microsoft Exchange service account to the  list of users granted the "Generate Security Audits" right.  Click "OK", and close the editor.