A Basic Application Could Not Be Started Wincc 75 |best| Jun 2026

What Causes "A Basic Application Could Not Be Started" in WinCC 7.5?

Inside a WinCC project directory, .dcf files store configuration parameters. If these contain invalid or corrupted data, the runtime system cannot start. Deleting these files allows WinCC to regenerate them cleanly, often resolving startup failures.

WinCC requires the active Windows user to belong to specialized local service groups to communicate with the SQL database and internal processes. a basic application could not be started wincc 75

If the above steps do not work, the SQL instance or WinCC installation is corrupted. Uninstall .

: If the SQL instance for WinCC was not installed correctly or if the computer name was changed after installation, WinCC cannot link to its internal databases. What Causes "A Basic Application Could Not Be

Check your specific compatibility requirements using the official Siemens Compatibility Tool .

WinCC 7.5 / "A basic application could not be started" message Deleting these files allows WinCC to regenerate them

WinCC requires specific Windows user rights to execute its background processes.

: Confirm you have a valid WinCC 7.5 license installed via the Automation License Manager .

What (e.g., Windows 10, Server 2019) are you running? Share public link

If you are working with , encountering the error message "A basic application could not be started. Please check your software license" can be a major roadblock. This error typically triggers when you try to open the WinCC Explorer or activate a project. 1. Verify License Status