Open the tool from the Windows Start Menu (under Siemens Automation). Select your problematic project file ( .mcp ). Choose a new destination folder for the duplicated project. Click Duplicate . Attempt to open the newly duplicated project file. 4. Clear Temporary Project Files (Reset_WinCC.vbs)
Corrupted system files or missing registry entries can cause this error.
Open the project again; WinCC will automatically create a fresh, uncorrupted .dcf file. 5. Reconnect Database Files via WinCC Project Duplicator
WinCC (Windows Control Center) is a popular HMI (Human-Machine Interface) software used for monitoring and controlling industrial processes. When encountering this error, it can be frustrating, especially if you're in the middle of a project. A Basic Application Could Not Be Started Wincc 7.5
As noted, SQL Server is the backbone for WinCC's data management. The specific service you need to check is SQL Server (WINCC) . If this service is stopped or fails to start, WinCC will be unable to perform any project-related tasks. The solution is often as simple as manually starting the service and setting it to start automatically. In more severe cases, the SQL Server installation itself may be damaged and require repair.
Let me know your setup details so we can narrow down the exact root cause. Share public link
"A Basic Application Could Not Be Started" in SIMATIC WinCC 7.5 Open the tool from the Windows Start Menu
Ensure your active Windows user account is explicitly added to the following groups: SIMATIC HMI CS (for configuration) SIMATIC HMI Viewer (for runtime execution)
To minimize the likelihood of encountering the "A basic application could not be started" error in WinCC 7.5:
If you want, provide the exact error text and an Event Viewer entry and I’ll suggest targeted next steps. Click Duplicate
Always ensure you have a valid backup of your WinCC project before performing repairs or reinstallations.
WinCC V7.5 stores configuration and runtime data inside a Microsoft SQL Server instance named WINCC . If this database instance is offline, WinCC cannot launch. Press Win + R , type services.msc , and press . Scroll down to find SQL Server (WINCC) . Check its status: If it is Stopped , right-click it and select Start . Ensure its Startup Type is set to Automatic .
If none of these steps work, check the (usually in C:\Program Files (x86)\Siemens\WinCC\Diagnostics ). Look for .log files created at the time of the crash; they often contain a specific error code that can be searched in the Siemens Industry Online Support (SIOS) portal.
Think of it like a car. The error message is like the check-engine light coming on. It tells you something is wrong, but it doesn't diagnose the exact problem. The light could be for the fuel cap (a minor issue) or the transmission (a major one). This WinCC error is similar; it's a general alert that the application cannot initialize one of its key components.