![]() For example, the update package for Cumulative Update for Windows 10 KB3194496 came in. Occasionally Windows Update packages come in CAB format, which doesn’t have an installation engine, XML file, or metadata file. msu) does some safety checks before installing the update.CAB FilesĬabinet Files (.CAB) are compressed archives that contain system files or drivers. The cab file Windows10.0-KB4598481-圆4.cab can be installed manually using the DISM command, which is explained in the next paragraph. msu package using the native command-line (instead of 7-Zip), use the following syntax: expand -f:* "D:\Updates\windows10.0-kb4598481-圆4.msu" D:\Updates\kb4598481 WUSA would stall the installation process by throwing the error message “ The update is not applicable to your computer.” It also tells you if the package is already installed. If your system has a more recent update already installed, or the update you’re trying to apply is for a different processor architecture (x86 vs. ![]() (For more information, refer to the Microsoft KB article Description of the Windows Update Standalone Installer in Windows.) If WUSA determines the update applies to your system, it launches the installation process using Windows Update Agent API.įor silent installation, you can use the following command-line syntax: wusa.exe "Filename.MSU" /quiet /norestart It then reads the Windows Update metadata to search for available updates for your computer. msu file, the Windows Update Standalone Installer (wusa.exe) extracts the package contents to a folder. To install an MSU file, all you need to do is double-click the file. msu file by extracting it manually or using the 7-Zip utility. For example, this file contains the title of the associated article in the Microsoft Knowledge Base, KB Article Number, Language, Package Type (e.g., Security Update), and Architecture information. A properties file: This file contains string properties that Wusa.exe uses.xml file when you perform an unattended installation of the update by using the Package Manager tool (Pkgmgr.exe). ![]()
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