The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the troubleshooter.

Describes how to troubleshoot problems that occur when you install, uninstall, or upgrade a program on a Windows-based computer by using Windows Installer.

Software manufacturers can create the setup of their products to use Windows Installer to help make software installation, maintenance, and uninstallation straightforward and easy. Windows Installer 4.5 is released with Windows Vista Service Pack 2 (SP2) and Windows Server 2008 SP2.

Windows 10. The Windows 10 Update Assistant downloads and installs feature updates on your device. Feature updates like Windows 10, version 1909 (a.k.a. the Windows 10 November 2019 Update) offer new functionality and help keep your systems secure.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website , where you'll find step-by-step instructions.

Download the installer for all versions of Windows except 64-bit versions of Windows Server 2003 or 64-bit versions of Windows XP. The following file is available for download from the Microsoft Update Catalog: Download the Windows Installer 3.1 Redistributable (v2) package now. Release Date: May 12, 2005.

Install the 64-bit version of Office instead of the 32-bit version. You may get an error if you try to install the 64-bit version of Office and you currently have the 32-bit version installed (or vice versa).

To resolve this issue, use Method 1. If Method 1 does not resolve the issue, use the next method that is listed until you resolve the issue. Method 1: Reset the Windows Installer Service settings in the registry. Method 2: Start the Windows Installer Service. Method 3: Uninstall any earlier versions of the program that you want to install.