A Basic Application Could Not Be Started Wincc 75 Best ((link)) Now

Guide: Fixing "A basic application could not be started" in WinCC 7.5

1. Understand the Error

This error typically appears during WinCC runtime startup. It means a core process (like the graphics runtime, alarm logging, or tag management) failed to launch. Common triggers include:

  • If you use a USB dongle, try a different USB port or reinstall the ALM driver.
  • Run the "License Cleanup Tool" (available from Siemens support) to remove ghost licenses.
    • Navigate to the WinCC configuration directory (typically C:\Program Files (x86)\Siemens\WinCC\Config).
    • Check if all necessary files are present and not corrupted.

    This error typically occurs when WinCC is unable to launch one of its core background services (e.g., Graphics Runtime, Alarm Logging, Tag Management, or the Cross-Manager). It prevents the runtime project from starting. a basic application could not be started wincc 75 best

    Report: "A basic application could not be started" — WinCC 7.5

    Summary

    • Open Command Prompt as an administrator.
    • Type sfc /scannow and press Enter.

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    Step 9: Windows User Account Control (UAC)

    • Set UAC to the lowest level (never notify).
    • Reboot and test activation.
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