Maintenance windows questions

Question

I have a question about SCCM maintenance windows, if I have some clients in different maintenance windows, for example, they are in a MW with Software Update type, they are also in another MW with All Deployments type. Which one has the higher priority?

Answer 1

As per https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/collections/use-maintenance-windows

If the maintenance windows overlap, the client treats them as a single window for the entire time of both windows. For example, you create two maintenance windows on a collection. The first is effective from 6:00 to 7:00, and the second is effective from 6:30 to 7:30. Because they overlap by 30 minutes, the effective duration of the combined maintenance window is 90 minutes from 6:00 to 7:30.

By default, with multiple maintenance windows, the client only installs software updates during Software Update type windows. It ignores any All deployments maintenance windows, unless they're the only type. You can configure this behavior with the following client setting in the Software updates group: Enable installation of software updates in "All deployments" maintenance window when "Software Update" maintenance window is available. For more information, see About client settings.

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hth

Marcin

Answer 2

Hi, @woo hada

Thank you for posting in Microsoft Q&A forum.

Like Marcin said, if we keep the client setting as default, the Software Update type has the higher priority.

If we set the Enable installation of software updates in "All deployments" maintenance window when "Software Update" maintenance window is available to Yes, the All deployments type has the higher priority.

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