A Basic Application Could Not Be Started Wincc 75 Best May 2026

Troubleshooting "A Basic Application Could Not Be Started" Error in WinCC 7.5

Simatic WinCC 7.5 is a robust SCADA system, but it is notorious for the frustrating "A basic application could not be started" error. This message usually appears during the startup phase or when attempting to open Graphics Designer. It indicates that a core background process—often related to the database or security settings—has failed to initialize.

  • Use the WinCC Project Duplicator regularly to create backups that are automatically checked for consistency.
  • Never force-close WinCC using Task Manager. Always use the "Deactivate" button in WinCC Explorer.

    • After adding your user, you must log off and log back in for changes to take effect. 4. Use the SIMATIC Security Control Tool a basic application could not be started wincc 75 best

    "A basic application could not be started" in WinCC 7.5 (and later) Troubleshooting "A Basic Application Could Not Be Started"

  • Antivirus/Firewall:
  • Ensure they are Started and set to Automatic.
  • If stopped: Right-click → Start. If it fails, reboot the PC.

    • If they are failing to start, check that your computer name does Use the WinCC Project Duplicator regularly to create

    7. Contact Siemens Support