There are several reasons why the installation or finalization of one or more Windows updates may freeze. Most often, these types of problems arise from a software conflict or an existing problem that simply wasn't exposed until Windows updates were installed. windows update error 0x80070015 may appear when you try to install an update through Windows Update, download an application, or install an application update through a Microsoft Store application, or run a Defender scan. In this post, you will learn how to fix error 0x80070015.