How to Reinstall Windows Installer 3.1

1. Verify your operating system requirements are met. Click on the Start button to access the Start Menu. Click on 'Run' to bring up the command prompt dialog box. Type ' sysdm.cpl' and click 'OK.'Alternatively, press the 'Windows logo' key plus the 'Break' key on your keyboard.A second alternative is to right-click the 'My Computer' icon and select 'Properties.' Your specific operating system information is on the 'General' tab, under the 'System:' section.
2. Visit the 'Windows Installer 3.1' download page. Under the 'Files in This Download' section, click the 'Download' button next to the file labeled, 'WindowsInstaller-KB893803-v2-x86.exe.' Save the file to a location where you can easily recall it, such as to your Windows desktop or 'My Documents' folder.
3. Click on the downloaded Windows Installer 3.1 file to initiate installation. The instructions are intuitive and will vary by operating system. Read and acknowledge the prompts as they arise. Prepare to restart your computer, if necessary.