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The Windows Installer CleanUp utility removes all files and registry settings associated with an app's Windows Installer database, allowing it to be reinstalled. The utility only changes registry values and files associated with Windows Installer and does not remove any files associated with installed programs.
Windows Installer (msiexec.exe, previously known as Microsoft Installer, [3] codename Darwin) [4] [5] is a software component and application programming interface (API) of Microsoft Windows used for the installation, maintenance, and removal of software.
Windows 7 includes Windows AIK tool Deployment Image Servicing and Management (DISM) which can remove files used by superseded OS updates using the Trusted Installer worker service, without the need to reboot or take down the system; [11] post-SP1 updates add Windows Update cleanup to the Disk Cleanup tool (cleanmgr.exe) [12] and the ...
In Windows Vista, Windows 7 and Windows 10, System File Checker is integrated with Windows Resource Protection (WRP), which protects registry keys and folders as well as critical system files. Under Windows Vista, sfc.exe can be used to check specific folder paths, including the Windows folder and the boot folder.
Only certain operating system components such as the Package Installer (Update.exe) or Windows Installer (Msiexec.exe) can replace these files. Changes made using any other methods in order to replace these files are reverted and the files are silently restored from the cache.
A folder containing only WRP-protected files may be locked so that only the TrustedInstaller user is able to create files or subfolders in the folder. A folder may be partially locked to enable administrators to create files and subfolders in the folder. Essential registry keys installed by Windows Vista are also protected. If a key is ...
The utility searches files that are no longer of any use, and enables the user to delete them. The candidates for deletion are categorized as: "Windows Update Cleanup": Copies of Windows updates that are already installed "Microsoft Defender Antivirus": Temporary files that Microsoft Defender Antivirus no longer needs
The MS-DOS installer goes straight to the text-based interface below to allow the user to install Windows. The Windows installer presents an agreement and asks for the product key right at the beginning to upgrade Windows, then it copies files to the hard disk, and reboot to the setup from the hard disk in order to continue to the next step. If ...