This article describes the Windows Update Standalone Installer (Wusa.exe) in the following Windows operating systems: The Wusa.exe file is in the %windir%\System32 folder. The Windows Update Standalone Installer uses the Windows Update Agent API to install update packages.

Update to Microsoft Update client. This article describes the update that further improves the security of Windows Update (WU) / Microsoft Update (MU) client for Windows 8, Windows RT, Windows Server 2012, Windows 7 Service Pack 1 (SP1), and Windows Server 2008 R2 SP1.

From a team. Go to the team and select More options. Select Manage team. On the Apps tab, scan for the Update button. Select Update for the app that you want to update. The app details page for that app will open. You can review the Permissions tab to see the new list of required permissions.