Uninstalling previous versions of Mapping and Charting solutions
All Esri products previous to version 10.1 need to be uninstalled before installing Esri Mapping and Charting solutions 10.1.

To find out what ArcGIS products are currently installed on your machine, download the PatchFinder utility from the Esri support site and run it from your local machine.

The ArcGIS Uninstall utility also removes all previous versions of ArcGIS and any extensions.
Important
Esri strongly recommends that all sample and third-party extensions or plug-ins be uninstalled before installing a newer version of an Esri product.
Before uninstalling ArcGIS for Desktop, remove the following products in this order:
- ArcGIS Data Reviewer Service
- Extension ArcGIS Data Reviewer for Desktop
- Extension ArcGIS Workflow Manager for Desktop
- Esri Aeronautical Solution, Esri Defense Mapping, and ArcGIS for Maritime : Création de diagrammes
- Task Assistant Manager
- Esri Production Mapping

Use Add/Remove Programs from the Windows Control Panel to uninstall Workflow Manager manually. You can also perform a silent uninstallation of this product.
8/31/2012