At (Windows)

A component of Microsoft Windows
Management console for Task Scheduler 2.0 in Windows 7
Details
Other names	taskschd.msc
Type	Windows service
Included with	Internet Explorer 4.0 and later (Windows 95 and Windows NT 4.0) Windows 98 and later (Windows 9x family) Windows 2000 and later (Windows NT family)
Replaces	System Agent
Service name	Task Scheduler (Schedule)
Description	Enables a user to configure and schedule automated tasks on this computer. The service also hosts multiple Windows system-critical tasks.
Related components
Microsoft Management Console, Windows Event Log

Task Scheduler is a component of Microsoft Windows that provides the ability to schedule the launch of programs or scripts at pre-defined times or after specified time intervals: job scheduling (task scheduling). It was first introduced in the Microsoft Plus! for Windows 95 as System Agent but was renamed to Task Scheduler in Internet Explorer 4.0 and Windows 98. The Windows Event Log service must be running before the Task Scheduler starts up.

This service should not be confused with the scheduler that allocates CPU resources to processes already in memory.

Task Scheduler 1.0 is included with Windows NT 4.0 (with Internet Explorer 4.0 or later), Windows 2000, Windows XP and Windows Server 2003. It runs as a Windows Service, and the task definitions and schedules are stored in binary .job files. Tasks are manipulated directly by manipulating the .job files. Each task corresponds to single action. On Windows 95 (with Internet Explorer 4.0 or later), Windows 98 and Windows Me, the Task Scheduler runs as an ordinary program, mstask.exe. It also displays a status icon in the notification area on Windows 95 and Windows 98 and runs as a hidden service on Windows Me, but can be made to show a tray icon. Computer programs and scripts can access the service through six COM interfaces. Microsoft provides a scheduling agent DLL, a sample VBScript and a configuration file to automate Task Scheduler.