It's for a multiuser concurrent environment. Install instructions indicate to install an administrative copy by running setup.exe /a. This does not run. it indicates an invalid switch. my question is: what should be the
</package | /i> <Product.msi>
Installs or configures a product
Administrative install - Installs a product on the network
/j<u|m> <Product.msi> [/t <Transform List>] [/g <Language ID>]
Advertises a product - m to all users, u to current user
</uninstall | /x> <Product.msi | ProductCode>
Uninstalls the product
Step one of an unistall is to remove any old components that are dependent on core ArcMap -and were installed separately. For example, if you have ArcGIS Desktop 10.5.1 loaded you would want to uninstall Data Interop, Data Reviewer, Mapping and Charting, etc. You do not have to worry about 3D, Spatial Analysis, Network because they were loaded by the core ArcMap installer.
In regarding to your MSI, the requirement to create an administrative install point is no longer required. Just extract the Desktop installer to a share file server. The command line to start an install from the command line (after you change directory to the install location) would be:
Msiexec /I setup.msi ADDLOCAL=ALL ESRI_LICENSE_HOST=<your license server> SOFTWARE_CLASS=Viewer (or Editor or Professional) SEAT_PREFERENCE=Float DESKTOP_CONFIG=TRUE /qb
Patches are installed after core thusly
Msiexec /p ArcGIS-1061-DT-BW-Patch.msp /qb
If you put these in a batch file it would look like this.
Rem For use by workstation support when loading one-machine-at-a-time.
Rem Note - run the ESRI UninstallUtility to remove any ArcGIS 10.3.1 or prior software.
Rem Install ArcGIS Desktop 10.6.1 on top of Desktop 10.5.1, with no special extensions
Rem Set path to the installers
SUBST Z: "\\myFileServer\Installers\ArcGIS 10.6.1\Desktop"
Great reply and information. Although setup.msi CAN be used to run the ArcGIS Setups on the command line, we recommend using setup.exe - you can use the same options as calling setup.msi.
ArcGIS Install Team