If you are a user with administrative privileges, launching Setup.exe, found in the ArcGIS Explorer Web download, will automatically install Windows Installer 3.1 as part of the ArcGIS Explorer installation process. Setup.exe will only install Windows Installer 3.1 if it is not present on your system. If Windows Installer 3.1 is present, Setup.exe will install ArcGIS Explorer without installing Windows Installer 3.1. The Windows Installer 3.1 software (Instmsi3.exe) is provided in the ArcGIS Explorer Web download as well as on the ArcGIS Explorer media.
• Microsoft .NET Framework 2.0 is required to install ArcGIS Explorer. The .NET Framework 2.0 must be installed manually to meet the requirement.
• NET Framework 2.0 information can be found at
http://www.microsoft.com/downloads/details.aspx?familyid=0856EACB-4362-4B0D-8EDD-AAB15C5E04F5&displaylang=en.
• MSXML 4.0 Service Pack 2 (SP2) or higher is required to install ArcGIS Explorer.

If you are installing ArcGIS Explorer as a user with administrative privileges, the setup will automatically install MSXML 4.0 SP2. MSMXL 4.0 Service Pack 2 information can be found at
http://www.microsoft.com/downloads/details.aspx?FamilyID=3144b72b-b4f2-46da-b4b6-c5d7485f2b42&DisplayLang=en.
Note: Administrative privileges are required to install the Microsoft .NET Framework 2.0, MSXML 4.0 SP2, and Windows Installer 3.1. If you are installing ArcGIS Explorer as a user without administrative privileges, the setup will inform you if these required components are not on the target installation machine.
ArcGIS Explorer can be installed with other ESRI products on your machine, regardless of the product version.

How to install ArcGIS Explorer

Before installing ArcGIS Explorer, verify that your system meets the system requirements. If you are downloading ArcGIS Explorer, the installation will launch automatically once the download is complete. For all other scenarios, double click Setup.exe to install ArcGIS Explorer.
The ArcGIS Explorer setup offers two types of installation: per machine and per user. Users with administrative privileges are only able to perform a per machine installation. The per machine installation type installs ArcGIS Explorer so that any user on that computer can run ArcGIS Explorer. Users without administrative privileges are only able to perform a per user installation. The per user installation type installs ArcGIS Explorer so that only the user installing ArcGIS Explorer can run the application.

ArcGIS Explorer installation type - per machine
ArcGIS Explorer only needs to be installed once and then anyone who uses that computer will be able to use ArcGIS Explorer. Additionally, no other users will be able to install the application. The default installation location is C:\Program Files\ArcGIS Explorer. However, you can browse to any desired installation location.

ArcGIS Explorer installation type - per user
Administrative privileges are not required to install ArcGIS Explorer for an individual user. The default installation location is the user's Documents and Settings folder. If the user installing attempts to install to a location that is beyond their privileges, a 1303 error will appear and the installation will abort. The user installing ArcGIS Explorer is the only one that can run the application. Other users must install ArcGIS Explorer from their respective accounts. With this installation type, each non-administrative user is required to install ArcGIS Explorer individually.

Note:
If you intend to install the ArcGIS Explorer Software Developer Kit, ArcGIS Explorer must be installed by a user with administrative privileges. The ArcGIS Explorer SDK installation will not proceed if ArcGIS Explorer has been installed by a user without administrative privileges.

How to install ArcGIS Explorer silently

ArcGIS Explorer can be installed without a user interface (UI) by running the setup using Windows Installer command line parameters. Administrative privileges are not required to install ArcGIS Explorer silently.

Requirements
• Windows Installer 3.1 must be installed and running on your machine prior to running the ArcGIS Explorer setup silently. The Windows Installer software package, Instmsi3.exe, can be found in the ArcGIS Explorer Web download as well as on the ArcGIS Explorer media.

ArcGIS Explorer required command line parameters
The following are the command line switches to execute the ArcGIS Explorer MSI directly. Use these with the MSI direct commands as required.

How to perform an installation of ArcGIS Explorer silently
Run this command from the command line to install ArcGIS Explorer for anyone who uses this computer. This example will install ArcGIS Explorer to C:\ESRI
Msiexec /I <setup location>\Setup.msi INSTALLDIR=C:\ESRI /qb
INSTALLDIR can be used to specify an installation location. The default installation location is the Documents and Settings folder of the user installing ArcGIS Explorer. If you are a user without administrative privileges attempting to install to a location that is beyond your user account privileges, an error will appear stating that you do not have the necessary privileges and the installation will abort.
If you are a user with administrative privileges performing a silent installation, INSTALLDIR must be given a value other than the default installation location. Otherwise, the installation will place ArcGIS Explorer in C:\Documents and Settings\<User>\ArcGIS Explorer, preventing other users from accessing ArcGIS Explorer.

How to perform an uninstallation of ArcGIS Explorer silently
To uninstall ArcGIS Explorer silently, run the following command from the command line.
Msiexec /X {7B18E7E2-AFCA-4CBE-8CD5-3613315AB262} /qb