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The following error message occurs when running ArcIMS40Setup.exe:
"ArcIMS Viewer must be removed before installing ArcIMS 4.0"
ArcIMS40Setup.exe checks for any installed software that might cause a conflict.
Please proceed in the order below.
Warning: The instructions below include making changes to essential parts of your operating system. It is recommended that you backup your operating system and files, including the registry, before proceeding. Consult with a qualified computer systems professional, if necessary. Esri cannot guarantee results from incorrect modifications while following these instructions; therefore, use caution and proceed at your own risk.
Note: Do this step before the others. This is the recommended method to remove ESRI products. If Add/Remove Programs fails to remove them, proceed with the remaining steps.
Code: [HKEY_LOCAL_MACHINE\Software\ESRI\AEJ WEBDOWNLOAD]
Code: [HKEY_LOCAL_MACHINE\Software\ESRI\ArcIMS Manager WEBDOWNLOAD]
Code: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\ESRI ArcIMS Viewer]
Code: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\ESRI ArcIMS 3.1 Manager]
Warning: Deleting a registry folder other than the ones given here can damage Microsoft Windows. Do not attempt this step unless you are sure you can find the folder given here.