Windows Update Scheduled Start Tasks and Important Notes on Disabling Them

Note: The screenshots in this article were captured in a Japanese-language Windows environment. Menu and setting names may differ slightly in an English-language installation.

Windows 11's Task Scheduler has built-in tasks related to Windows Update. Scheduled Start, displayed in the Microsoft\Windows\WindowsUpdate folder, is a task that starts a scheduled update process.

You can choose to disable it in Task Scheduler, but Microsoft does not list disabling Scheduled Start as an official method for managing Windows Update. Control automatic updates for kiosks and digital signage with group policies or registry policies, as Windows updates and maintenance processes may recreate and re-enable tasks.

operation	positioning
Check WindowsUpdate folder	Can be used to investigate the cause of update processing and device startup
View task history/triggers	Can be used to separate execution time and processing content
Scheduled Start disable	Not recommended for anything other than temporary testing
Refresh Group Policy Cache disable	Do not disable it as it will affect group policy
Control automatic updates	Use Windows Update policies

Tasks located in WindowsUpdate folder

In the published verification environment, the following tasks appear in the Microsoft\Windows\WindowsUpdate folder:

task name	Roles that can be confirmed on screen
Scheduled Start	Start a scheduled operation, such as a scan
Refresh Group Policy Cache	Update the Group Policy cache regarding Windows Update

The number of tasks, names, and triggers may vary depending on your Windows version and update status. Don't guess and disable a task with a different name if there is no task with the same name as the article.

In particular, Refresh Group Policy Cache is a system task related to policy reflection. If you disable it in an attempt to stop Windows Update, it may become difficult to confirm that the update policy set by the administrator is being applied, so we will not change it.

Open task scheduler

Open from Computer Management

1. Right-click the Start button.
2. Select Computer Management.
3. Expand System Tools → Task Scheduler.

Open with Run

Open "Run" with Win + R, and you can also start Task Scheduler by typing taskschd.msc.

Check WindowsUpdate folder

Open the following location in the tree on the left:

Task Scheduler Library
  → Microsoft
  → Windows
  → WindowsUpdate

The list in the center displays the tasks registered to the current device.

In addition to the task name, record the following items:

• condition
• Last run time
• Last run result
• Next execution time
• trigger
• operation
• conditions
• history

If history is disabled, you can check future execution records by selecting "Enable all task history" from the operations on the right. Enabling history will affect the amount of logs, so decide on an operational policy after investigating the cause.

Learn more about Scheduled Start

Double-click Scheduled Start to open its properties and check the following:

1. Check the execution conditions and time on the “Trigger” tab
2. Check the programs that run on the Operations tab
3. Check the wake-up settings on the "Conditions" tab
4. Check the actual launch date and time on the "History" tab

If your device wakes up or starts an update process at an unexpected time, Scheduled Start is not the only possible cause. Also check Update Orchestrator, Windows Update policies, power settings, RTC, and other tasks.

You can investigate the cause without changing the system state by simply checking the task properties and history. Rather than disabling it from the beginning, collect execution records to determine the extent of the impact.

Things to note before disabling Scheduled Start

Disabling Scheduled Start does not reliably stop the entire automatic process of Windows Update.

• Windows Update has non-task services and orchestrators
• Built-in tasks may be recreated during Windows updates and maintenance processes
• Disabling may affect update detection and manual maintenance
• It becomes difficult to notice that security updates are not being applied.
• Task configuration differs depending on Windows version

Do not change the ownership or permissions of built-in tasks or directly delete task files or the TaskCache registry. This will make recovery difficult and may break Windows maintenance processes.

Regarding the invalidation operation in the image

In the published image, you can see that you can right-click Scheduled Start and select "Disable".

This image is a location record and does not represent the recommended settings that should be performed on all kiosks. If you temporarily disable it to investigate the cause, record the state before the change and be sure to restore it after verification.

Refresh Group Policy Cache will not be disabled. It is outside the scope of this article as it pertains to cached updates in Windows Update policies.

Automatic updates are controlled by Windows Update policy

If you want to switch Windows 11 automatic updates to manual maintenance by an administrator, use one of the following:

• Windows Pro／Enterprise／Education：How to control Windows Update with Group Policy
• Registry policy:How to set NoAutoUpdate

By setting "Configure automatic updates" in Group Policy to Disabled, you can disable automatic updates while still allowing manual updates by the administrator. Reboots and notifications during business hours are also controlled by their respective policies.

Rather than repeatedly changing permissions for tasks, services, and registries, it is better to record policies and maintenance plans as a single management policy to prevent failure to restore when updates are resumed.

How to undo a changed task

If you disabled Scheduled Start for verification purposes, follow these steps to change it back.

1. Open the Microsoft\Windows\WindowsUpdate folder.
2. Right-click Scheduled Start.
3. Select "Enabled".
4. Verify that the task status is now the same as before the change.
5. Restart Windows.
6. Manually check Windows Update and check update history.

If the task is missing, cannot be modified, or is not recreated, do not change ownership of the task and consider troubleshooting Windows Update or system repair.

Reference materials

• Windows IoT Enterprise Update Policy (Microsoft Learn)
• Windows Update Client Policy (Microsoft Learn)
• Task Scheduler Overview (Microsoft Learn)
• Get-ScheduledTask command (Microsoft Learn)

Summary

Scheduled Start is a built-in task about Windows Update, but disabling it is not an official way to manage automatic updates. The task may be recreated or other update paths may work.

For kiosks and digital signage, use Task Scheduler to investigate the cause, and control automatic updates, restarts, and notifications with Windows Update policies. Leave Refresh Group Policy Cache unchanged, and even if you disable Scheduled Start for verification purposes, restore it to its original state after confirmation.