Most of the time when you go to install new programs on your computer, the operating system is going to use Windows Installer to perform the setup and install. Sometimes the Windows Installer can become corrupt or have errors causing it to not perform properly. This can often lead to the inability to install (or uninstall) software. These messages often look like:
If you have encountered these errors, you need to fix the corrupt installation of Windows Installer. This can be done yourself, although if you are not a computer expert it can be a bit scary. If you are not comfortable fixing it yourself, you can call a technician or take your computer to the store where you bought it and consult with the help team (at Best Buy this is the Geek Squad and a Circuit City it is called Firedog).
An easier, an much less expensive option, is to use a Registry Cleaner software like RegCure. It will run a scan (for FREE by the way) and identify problems with your system registry that may be interfering with your Windows installer functionality. If it identifies problems, you can choose whether or not to purchase it to fix or repair the problems and get your Windows Installer working again.
Many problems on your computer may be caused by problems in your system registry. The longer you own a PC, the more and more programs and toolbars are installed and uninstalled on your computer which can really bog down your registry. Some of the codes and data in the registry contradict one and other and can cause errors and issues - like the Windows Installer error messages.
RegCure is just one of the many Registry Cleaner programs out there that can help with this and other related problems. Here are a few others you might consider that can also handle issues related to the Windows Installer errors: