Have you installed any ?
Press Win + R , type lusrmgr.msc , and press to open Local Users and Groups. Click on Groups in the left pane. Locate the group named SIMATIC HMI .
To resolve the "A Basic Application Could Not Be Started" error, follow these troubleshooting steps:
: Use this script in the WinCC "Bin" folder to terminate stuck processes and restart the system. A Basic Application Could Not Be Started Wincc 7.5
If system files or registry entries have been corrupted by a Windows Update or a third-party antivirus program, running a software repair is the most effective solution.
Follow these steps in order to isolate the cause:
If running WinCC 7.5 in a VM:
Open Windows Explorer and navigate to your specific WinCC project folder.
Right-click > Manage > Local Users and Groups > Groups . Ensure your username is a member of: SIMATIC HMI SIMATIC HMI Viewer Administrators 6. Repairing the Project (Security Controller)
| | Action | Goal | | :--- | :--- | :--- | | 1 | Restart Your PC. | A fresh start can eliminate temporary glitches. | | 2 | Run reset_wincc.vbs . | Resets WinCC's internal configuration to default. | | 3 | Check SQL Server. | Verify all SQL Server (WINCC) services are fully operational. | | 4 | Check Network Adapter. | For WinCC 7.5 SP2, connect the "Terminal Bus" adapter to an active network device. | | 5 | Run Security Controller. | Execute "Make Settings" in SIMATIC Security Control . | | 6 | Check OS Compatibility. | Confirm your OS is officially supported by your WinCC version. | | 7 | Check License. | Use ALM to ensure the correct license is installed and recognized. | | 8 | Repair Installation. | Run a standard "Change/Repair" installation via the Windows Control Panel. | | 9 | Clean Uninstall & Reinstall. | Remove all components, restart, and reinstall WinCC from scratch. | | 10 | Update WinCC. | Install the latest update package. | | 11 | Reinstall Windows. | Perform a full OS reinstallation to guarantee a clean environment. | Have you installed any
, try the following troubleshooting steps derived from community consensus and Siemens support discussions: 1. Verification of Compatibility and Updates Match OS and WinCC Versions
WinCC requires specific local Windows permissions to access its SQL databases and project management files. Press Win + R , type compmgmt.msc , and press . Navigate to System Tools > Local Users and Groups > Groups . Locate the SIMATIC HMI group. Double-click it.
The "A basic application could not be started" error typically occurs when the WinCC 7.5 application fails to launch or start properly. This error can be caused by various factors, including configuration issues, software conflicts, or problems with the system's environment. Locate the group named SIMATIC HMI
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)
WinCC can fail if the Windows user account lacks necessary permissions on file system or registry keys.