Software Updates and Maintenance Windows
Applies To: System Center 2012 Configuration Manager, System Center 2012 Configuration Manager SP1, System Center 2012 R2 Configuration Manager
System Center 2012 R2 Configuration Manager maintenance windows provide administrators with a way to define a period of time that limits when changes can be made on the systems that are members of a collection. Maintenance windows restrict when the software updates in deployments can be installed on client computers, in addition to restricting when operating system advertisements and software distribution advertisements can be installed.
General information about Software Updates can be found in the Documentation Library for System Center 2012 Configuration Manager under Software Updates in Configuration Manager.