Symptoms

When running the Shavlik Protect Install Program, The following error is returned:

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

Cause

Download Version 9.1.4472 - 84 MB full installer for new installs is being used on a machine with an existing version of protect 9.1 or with remnants of a previous Protect 9.1 installation

Resolution

If Protect 9.1 build .4334 or .4446 is already installed,  use Download Protect v9.1 Patch 2 - 18 MB (.exe)  to upgrade the existing 9.1 version to build .4472

If the patch 2 fails remove the remnants of the previously failed 9.1 installation using instructions found at Install/Uninstall - How to clean up broken installs of Shavlik Protect with the Microsoft Fixit Tool , https://community.shavlik.com/docs/DOC-23613

Affected Product(s)

Shavlik Protect 9.X