You can specify when approved updates are distributed to the computers on your network for installation. This can be daily or on a selected day of the week. You can also specify the time the distribution will start.
From the left-hand pane, expand Software, and then expand Windows Updates.
From the left-hand pane, choose the WSUS server.
From the right-hand pane, click the Settings button.
Choose the Scheduling tab.
Under Installation Schedule:
From the drop-down list, select a day of the week.
Specify a start time.
Click OK.
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