This security setting determines which user accounts can call the CreateProcessAsUser() application programming interface (API) so that one service can start another. An example of a process that uses this user right is Task Scheduler. For information about Task Scheduler, see Task Scheduler overview. Default: Network Service, Local Service. Counter Measure: For member servers, ensure that only the Local Service and Network Service accounts have the Replace a process level token user right. Potential Impact: On most computers, this is the default configuration and there will be no negative impact. However, if you have installed optional components such as ASP.NET or IIS, you may need to assign the Replace a process level token privilege to additional accounts. For example, IIS requires that the Service, Network Service, and IWAM_<ComputerName> accounts be explicitly granted this user right. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\User Rights Assignment\Replace a process level token (2) REG: ### (3) WMI: root\rsop\computer#RSOP_UserPrivilegeRight#AccountList#UserRight='SeAssignPrimaryTokenPrivilege' and precedence=1