RpcRevertToSelf  
After calling
RpcImpersonateClient and completing any tasks that require client
impersonation, the server calls RpcRevertToSelf to end impersonation and
to reestablish its own security identity.
This function
is supported only by Windows NT.
#include <rpc.h>
RPC_STATUS
RPC_ENTRY RpcRevertToSelf (VOID);
Return Values
| Value | Meaning | 
| RPC_S_OK | Success. | 
| RPC_S_NO_CALL_ACTIVE | Server does
  not have a client to impersonate. | 
| RPC_S_INVALID_BINDING | Invalid
  binding handle. | 
| RPC_S_WRONG_KIND_OF_BINDING | Wrong kind
  of binding for operation. | 
| RPC_S_CANNOT_SUPPORT | Not
  supported for this operating system, this transport, or this security
  subsystem. | 
Remarks
In a
multithreaded application, if the call to RpcImpersonateClient is with a
handle to another client thread, you must call RpcRevertToSelfEx with the handle to that
thread to end impersonation.
See Also