Task Scheduler Download
Bill Keplar
The Task Scheduler service allows you to perform automated tasks on a chosen computer. With this service, you can schedule any program to run at a convenient time for you or when a specific event occurs. The Task Scheduler monitors the time or event criteria that you choose and then executes the task when those criteria are met.
The Task Scheduler enables you to automatically perform routine tasks on a chosen computer. The Task Scheduler does so by monitoring whatever criteria you choose (referred to as triggers) and then executing the tasks when those criteria are met.
Some examples of tasks that you can use the Task Scheduler to execute are: starting an application; sending an email message; or displaying a message box. You can schedule a task to execute in response to these triggers:
On Windows 10, the Task Scheduler lets you create and run tasks automatically, and in this guide, I'll outline the steps to complete the process. Typically, the operating system and certain apps use the scheduler to automate maintenance tasks (such as disk defragmentation, disk cleanup, and updates). However, you can use it to automate your own tasks. For example, you can launch programs, run commands, and execute scripts at a specific time or trigger tasks when a specific event occurs.
Task Scheduler (formerly Scheduled Tasks)[1] is a job scheduler in Microsoft Windows that launches computer programs or scripts at pre-defined times or after specified time intervals.[2][3] Microsoft introduced this component in the Microsoft Plus! for Windows 95 as System Agent.[4] Its core component is an eponymous Windows service.[5] The Windows Task Scheduler infrastructure is the basis for the Windows PowerShell scheduled jobs feature introduced with PowerShell v3.[6]
Task Scheduler can be compared to cron or anacron on Unix-like operating systems. This service should not be confused with the scheduler, which is a core component of the OS kernel that allocates CPU resources to processes already running.
Task Scheduler 1.0 is included with Windows NT 4.0[7] (with Internet Explorer 4.0 or later), Windows 2000,[7] Windows XP[8] and Windows Server 2003.[9] 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.[1] Computer programs and scripts can access the service through six COM interfaces.[10] Microsoft provides a scheduling agent DLL, a sample VBScript and a configuration file to automate Task Scheduler.[11]
In addition to the graphical user interface for Task Scheduler in Control Panel, Windows provides two command-line tools for managing scheduled task: at.exe (deprecated)[12] and schtasks.exe.[5][13][14] However, at.exe cannot access tasks created or modified by Control Panel or schtasks.exe.[15] Also, tasks created with at.exe are not interactive by default; interactivity needs to be explicitly requested. The binary ".job" files which the AT command produces are stored in the %WINDIR%\Tasks directory.[16][17]
Task Scheduler 2.0 was introduced with Windows Vista[18] and included in Windows Server 2008 as well.[19][9] The redesigned Task Scheduler user interface is now based on Management Console. In addition to running tasks on scheduled times or specified intervals, Task Scheduler 2.0 also supports calendar and event-based triggers, such as starting a task when a particular event is logged to the event log, or when a combination of events has occurred. Also, several tasks that are triggered by the same event can be configured to run either simultaneously or in a pre-determined chained sequence of a series of actions, instead of having to create multiple scheduled tasks. Tasks can also be configured to run based on system status such as being idle for a pre-configured amount of time, on startup,[20] logoff, or only during or for a specified time. XPath expressions can be used to filter events from the Windows Event Log. Tasks can also be delayed for a specified time after the triggering event has occurred, or repeat until some other event occurs. Actions that need to be done if a task fails can also be configured. The actions that can be taken in response to triggers, both event-based as well as time-based, not only include launching applications but also take a number of custom actions. Task Scheduler includes a number of actions built-in, spanning a number of applications; including send an e-mail, show a message box, or fire a COM handler when it is triggered. Custom actions can also be specified using the Task Scheduler API. Task Scheduler keeps a history log of all execution details of all the tasks.[21] Windows Vista uses Task Scheduler 2.0 to run various system-level tasks;[22] consequently, the Task Scheduler service can no longer be disabled (except with a simple registry tweak).
Task Scheduler 2.0 exposes an API to allow computer programs and scripts create tasks.[19][23] It consists of 42 COM interfaces.[24] The Windows API does not, however, include a managed wrapper for Task Scheduler though an open source implementation exists.[25] The job files for Task Scheduler 2.0 are XML-based, and are human-readable, conforming to the Task Scheduler Schema.[19][23]
The Task Scheduler service works by managing Tasks; Task refers to the action (or actions) taken in response to trigger(s). A task is defined by associating a set of actions, which can include launching an application or taking some custom-defined action, to a set of triggers, which can either be time-based or event-based. In addition, a task also can contain metadata that defines how the actions will be executed, such as the security context the task will run in. Tasks are serialized to .job files and are stored in the special folder titled Task Folder, organized in subdirectories. Programmatically, the task folder is accessed using the ITaskFolder interface or the TaskFolder scripting object and individual tasks using the IRegisteredTask interface or RegisteredTask object.[26]
On Windows 2000 and Windows XP, when a computer is prepared for disk imaging with the sysprep utility, it cannot run tasks configured to run in the context of the SYSTEM account. Sysprep changes the security identifier (SID) to avoid duplication but does not update scheduled tasks to use the new SID. Consequently, the affected tasks fail to run. There is no solution for this problem but one may reschedule the affected tasks to work around the issue.[29]
I need to run a task using the scheduler, the problem is that, if I double click on the executable, the program gets the focus and run in full screen, if I run the same executable using task scheduler, the command window remains on top and the application runs on the background, can please somebody help me?
I did manage to revolve the problem with a vbs script running my executable instead of running the executable directly from the task scheduler.So now the task scheduler runs my vbs script that runs the executable.
I would like to schedule a .pyw script in Task Scheduler on Windows. When I double click on the file, everything works properly, the program does what it should do. I successfully create a task in Task Scheduler:-'Run with highest privileges' checked-Configure for Windows 10-'At system startup' trigger-Action: 'Start a program' and I provide the full path to the .pyw script-I have also unchecked 'Start the task only if the computer is on AC power'
..and when I do right click --> Run, I get a standard question: "How do you want to open this file" etc. Now, status of the task is 'Running', but nothing happens, and I cannot find my program running in Task Manager. Any advice?
You should provide a full path to the python interpreter and in the optional parameters add the path to your script.Just like in cmd, when you run a python script, you type python first, works the same with the task scheduler.
If a task is set to start only if the computer is idle for 30 minutes, and the task waits for the computer to be idle for 10 minutes, then the task will launch in 5 minutes only if the computer has been idle for 25 minutes prior to the time the trigger was activated. The task will not start if the computer enters an idle state 5 minutes after the trigger is activated.
In your screenshot you have a task that will trigger at a certain time. When this task triggers, it will only execute if the statement "the computer has been idle for 10 minutes" is true. The task will wait up to an hour for the statement to become true, and then it will give up.
If the computer becomes idle after, say, 15 minutes after the task triggered, the task will continue waiting. 25 minutes after the task triggered, the statement "the computer has been idle for 10 minutes" becomes true, so the task will execute.
If the computer doesn't become idle within 50 minutes of the task being triggered, the task will not execute. That's because the task will stop waiting after 60 minutes, so if the computer becomes idle more than 50 minutes after the task was triggered, the statement "the computer has been idle for 10 minutes" won't be true until after the specified 1 hour wait is over.
And just to complicate this a little more, Windows only evaluates if the computer is idle every 15 minutes. So even if you schedule a task at 09:00, with an idle for 1 minute and you make sure you're not doing anything for that whole minute, it may still not activate at 09:01 and may actually not activate until 09:15 depending on when Windows evaluates the idle state.
Start the task if the computer idle time upon trigger is >= 30 minutes.Otherwise the task watches the computer idle time for 10 more minutes.If the computer idle time reaches 30 minutes within that 10 minute watch, the task is started.Otherwise the task is not started.
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