Open the tool from the Siemens Start Menu folder. Select your problematic project's .mcp file as the source. Choose a brand-new destination folder on your local drive. Click Duplicate . Attempt to open the newly duplicated project. Step 4: Clear Temporary Lock Files Manually
: Ensure your Windows user is a member of the required Siemens user groups (e.g., SIMATIC HMI).
Also, verify that the service is running. Step 3: Run the SIMATIC Security Controller
Recent operating system updates altering security policies or DCOM settings. Step-by-Step Troubleshooting Network A Basic Application Could Not Be Started Wincc 7.5
) or other special characters, as these can cause the internal SQL instance to fail. Update Microsoft Edge
Ensure the Windows Computer Name matches the name specified in the WinCC Project Properties exactly.
Open your WinCC project again to check if the error is resolved. 2. Verify Windows User Group Memberships Open the tool from the Siemens Start Menu folder
The .dcf file contains temporary configuration and connection routing cache data. If it becomes corrupted, it prevents the basic application from loading. Deleting it forces WinCC to regenerate a clean version.
Troubleshooting "A Basic Application Could Not Be Started" in WinCC 7.5
The error message "A Basic Application Could Not Be Started" in WinCC 7.5! Click Duplicate
WinCC 7.5 / "A basic application could not be started" message
Detailed requirements for distributed systems are available at Siemens Industry Online Support registry path for the Windows 11 sector size fix or help checking your compatibility
Siemens provides a dedicated utility script to reset the core components of the WinCC HMI system without reinstalling the software. Close your WinCC application.
Open and click on Simatic Shell (usually at the bottom of the navigation pane). Right-click Simatic Shell and select Settings .
: Re-verify SQL server logins and instance properties.