💡 Always run the installer as an Administrator . Even if your account has admin rights, right-clicking the Setup.exe and choosing "Run as Administrator" ensures the installer has the depth of permissions needed to write to the Windows Registry and System32 folders.
Log into Windows using an account with administrative privileges.
To speed up the process and save space, only select the products you need (e.g., Aspen HYSYS ) rather than the entire suite. Carnegie Mellon University 3. Licensing Configuration
This is the most common failure point. V12 uses the Aspen Integration Infrastructure.
Open services.msc , locate SQL Server (TEKSCIENCE) or MSSQLSERVER , and change startup to . "No License Available" (Error 100) Environment variable mismatch or blocked ports.
Once installed, tweak these parameters to make Aspen HYSYS V12 run faster and solve complex sheets with less latency. Allocate High CPU Priority Open while HYSYS is running. Go to the Details tab and locate hysys.exe .
to ensure the installer has the necessary permissions to write to system directories. Install Prerequisites First: aspenONE Installer
: If you encounter errors launching the software, ensure the STRGXI2.dll file is correctly located in the AspenTech Shared folder within Program Files\Common Files .
: If you have older versions of Aspen, it is highly recommended to uninstall them and reboot before starting the V12 installation to avoid registry conflicts.
Choose "Aspen HYSYS" from the list of aspenONE products. License Configuration:
Aspen HYSYS v12 uses the FLEXnet / Flexera licensing service.