Home → Troubleshooting → Issues while Uninstalling → "Another version of this product is already installed. Installation of this version cannot continue."
Applies to: All products, versions 5.x–7.x uninstallers
In Programs and Features (or Add or Remove Programs, or using msiexec /x), I tried to uninstall my Palisade software. But a window popped up with the title "Windows Installer" and this message:
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.
How can I uninstall the product?
Some pointers are incorrect in the database of installed programs. This can happen, according to CNet, if "your computer's registry becomes corrupted; you or someone else inadvertently changes a registry setting used by the Windows Installer, resulting in a problem; the installation of a program that uses Windows Installer ... is interrupted; or there are multiple instances of Setup running simultaneously, or an instance of Setup is blocked".
Microsoft offers a tool to repair this type of problem; please see Microsoft's article Fix Problems with Programs That Can't Be Installed or Uninstalled.
(For future reference: a repair of our software is almost always a better option than uninstalling and reinstalling. It preserves the license, it's faster, and it's less disruptive in general. Very seldom is a full uninstall/reinstall necessary. For directions, see Repair of Palisade Software.)
Last edited: 2016-11-15