The only authorized source is the Schneider Electric Download Center (formerly known as the Schneider Electric Technical Website).
Many system integrators who built projects in 2015-2017 received physical installation media. While antiquated, these DVDs are often the most reliable source, as they do not require online authentication for the installer (only for the license dongle). Schneider Electric Somachine 4.3 Download
If you have the installation media on a CD or network drive, back it up immediately to an ISO file along with your license dongle's activation file. The only authorized source is the Schneider Electric
| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | "Microsoft .NET Framework 3.5 not found" | Windows 10 does not enable .NET 3.5 by default. | Go to Control Panel → Programs and Features → Turn Windows features on/off → Check ".NET Framework 3.5 (includes 2.0 and 3.0)". | | "Installation of SQL Server Compact failed" | Permissions issue or corrupted Windows component. | Run msiexec /unregister then msiexec /regserver from an admin command prompt. Reinstall. | | "The following controllers are not supported: TM241CEC24R" | You are using a newer controller (firmware V5.0 or higher). SoMachine 4.3 only supports up to firmware V4.2. | Upgrade to EcoStruxure Machine Expert or downgrade controller firmware (not recommended for production). | | "CodeMeter Error: No license container found" | USB dongle not recognized or driver failed. | Reinstall CodeMeter driver from C:\Program Files (x86)\CodeMeter\Drivers . Try a different USB port (USB 2.0 preferred). | | SoMachine crashes when opening a project | Old project uses a device description file not installed. | Rebuild the device repository: Tools → Device Repository → Install from file. Locate the missing .devdesc file. | If you have the installation media on a
