To verify that the Windows Installer service is running and to enable it if it is not, follow the steps below: If this service is disabled any services that depend on it will fail to start. The Windows Installer service adds, modifies, and removes any applications that are provided as an. Solution 2: Start the Windows Installer service If you receive the same error message, the Windows Installer service may need to be restarted or repaired. Make sure to choose Save instead of Run when downloading the installer file.Īfter you have saved the file, locate and double-click it to re-try the installation process. If a warning appears informing you that the installer file already exists, click Yes to confirm the download and replace the damaged file.