March Public Update for SharePoint 2013 available and mandatory

The product group recently released the March 2013 Public Update (PU) for the SharePoint 2013 product family.

Important: Due to a change in the package configuration introduced after SharePoint 2013 RTM the March Public update is a mandatory requirement in order to install subsequent SharePoint 2013 Updates.

That means that in order to install future cumulative updates for SharePoint 2013 it will be mandatory to first install the March public update.

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Source: Stefan Goßner