Task Scheduler uses standard Windows security functions provided by S4U. Upon registration, Task Scheduler authenticates credentials as a trusted service and stores identity only in a domain\user name format . Upon execution, S4U provides restricted token access based on the identity provided by Task Scheduler. Service for User to Self (S4U2Self) implements the same functions as S4U for workgroups, stand-alone computers, and computers that belong to a domain but are not currently connected to that domain For more information about S4U, see RFC 1510: "The Kerberos Network Authentication Service (V5)," at http://www.ietf.org/rfc /rfc1510.txt.
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