Cannot perform Setup Project Uninstallation

Question

I get following message in my installation log when trying to uninstall application created with .NET Setup Project

MSI (s) (F0:C4) [16:00:16:532]: Product: "Product Name" -- Configuration failed.

Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel. {some GUID in here}

Answer 1

Seems like your registry got messed up.

You can use the following article to manually remove the application

If your GUID is 00000409-78E1-11D2-B60F-006097C998E7 for example, just run the following line to remove the program

msiexec.exe /x {00000409-78E1-11D2-B60F-006097C998E7}

good luck!