: Go back to the patch folder, run install_Sentinel.RMS.8.5.1.Server\setup.exe as an administrator, and follow the default setup.
(Windows 10/11) is recommended for smooth simulation of complex plants. Clean Slate
The number one reason Aspen installations fail is interference from previous versions or lack of permissions.
The default Aspen installer automatically installs a fresh instance of SQL Express, which often conflicts with pre-existing local databases.
