1/ 8, Windows 7, Vista/ XP. The error description is “ Error 1603: A fatal error occurred during installation”. The steps will be the same for Act! on Windows7 - remove Act! using the Uninstaller, then reinstall. See your Private Messages for a link to. How to fix Error 1603: A fatal error occurred during installation When you try to install a Microsoft Windows Installer package, you may receive. I am running Win7 on a new computer. The error message is: 1603 Fatal Error during installation. Consult windows installer help ( msi. com/ Sometimes an error message that appears on screen is " Error 1603: A fatal error occurred during installation". The error message is basically something like “ Error: - 1603 Fatal error during installation. ” It usually occurs when you are using a Windows. This video shows how to fix error 1603 while installing or uninstalling an application like skype Microsoft Fix It a free application which.
You receive an " error 1603: A fatal error occurred during installation" error message when you try to install a Windows Installer package. The steps are also applied to Windows 7. If this error occurs during un- installation, use the Microsoft Windows Installer CleanUp utility to. removewindowserrors. com Error 1603 " A fatal error occurred during installation" appear on the system screen when user install.