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FAQ: Does ArcGIS 9.0 need to be completely uninstalled before installing ArcGIS 9.1?

Question

Does ArcGIS 9.0 need to be completely uninstalled before installing ArcGIS 9.1?

Answer

Yes. Everything related to ArcGIS 9.0 (ArcGIS Desktop, ArcInfo Workstation, Desktop Developer Kit, Tutorial Data, Python, Crystal Reports and any third-party customizations, toolbars, etc.) must be uninstalled before installing ArcGIS 9.1.

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