How to use maintenance windows in System Center Configuration Manager
Applies to: System Center Configuration Manager (Current Branch)
Maintenance windows enable you to define a time when Configuration Manager operations can be carried out on a device collection. You use maintenance windows to help ensure that client configuration changes occur during periods that don't affect productivity. Starting in Configuration Manager version 1806, your users can see when their next maintenance window is from the Installation status tab in the Software Center.
The following operations support maintenance windows:
Software update deployments
Compliance settings deployment and evaluation
Operating system deployments
Task sequence deployments
Configure maintenance windows with a start date, a start and finish time, and a recurrence pattern. The maximum duration of a window has to be less than 24 hours. By default, computer restarts caused by a deployment aren't allowed outside of a maintenance window, but you can override the default. Maintenance windows affect only the time when the deployment program runs; applications configured to download and run locally can download content outside of the window.
When a client computer is a member of a device collection that has a maintenance window, a deployment program runs only if the maximum allowed run time doesn't exceed the duration configured for the window. If the program fails to run, an alert is generated and the deployment is rerun during the next scheduled maintenance window that has available time.
Using multiple maintenance windows
When a client computer is a member of multiple device collections that have maintenance windows, these rules apply:
If the maintenance windows don't overlap, they're treated as two independent maintenance windows.
If the maintenance windows overlap, they're treated as a single maintenance window encompassing the time period covered by both maintenance windows. For example, if two windows, each an hour in duration overlap by 30 minutes, the effective duration of the maintenance window would be 90 minutes.
When a user initiates an application installation from Software Center, the application is installed immediately, regardless of any maintenance windows.
If an application deployment with a purpose of Required reaches its installation deadline during the nonbusiness hours configured by a user in Software Center, the application will be installed.
How to configure maintenance windows
In the Configuration Manager console, choose Assets and Compliance> Device Collections.
In the Device Collections list, select a collection. You can't create maintenance windows for the All Systems collection.
On the Home tab, in the Properties group, choose Properties.
In the Maintenance Windows tab of the <collection name> Properties dialog box, choose the New icon.
Complete the <new> Schedule dialog.
Make a selection from the Apply this schedule to drop-down list.
Choose OK and then close the <collection name> Properties dialog box.
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