: If the error persists, uninstall WinCC and the SQL instance separately, then reinstall both from scratch.
| | 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. |
The "Security Controller" tool aligns Windows security settings with Siemens requirements. Search for in your Start menu. Click Repeat Settings .
Some security tools block WinCC’s dynamic data exchange or SQL connections. A Basic Application Could Not Be Started Wincc 7.5
: Siemens recommends installing WinCC locally rather than via Remote Desktop (RDP) to ensure all components register correctly. Clean Reinstall
WinCC communicates internally through a virtual network layer called Simatic Shell. If it binds to the wrong network adapter, local services will fail to initialize. Open or Windows File Explorer.
: Always start WinCC with the same user account used during the initial installation to avoid permission-based startup failures. : If the error persists, uninstall WinCC and
WinCC 7.5 / "A basic application could not be started" message
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This guide covers the root causes of this error and provides step-by-step instructions to get your SCADA system back online. Primary Root Causes | | 2 | Run reset_wincc
If none of the above solves the issue, consider:
The error message is notoriously misleading. While it points to a license issue, this is often not the root cause. The "basic application" WinCC is referring to is typically one of its core, underlying services—most frequently the or the Project Manager that handle critical background tasks. However, this error has several distinct causes.
Ensure the correct Network Adapter is selected. If the wrong "Communication Settings" are chosen, WinCC may fail to initialize the basic application. 6. Antivirus and Firewall Exceptions
Follow these troubleshooting steps in order, moving from the most common quick fixes to advanced system configurations. 1. Rebuild the Project Cache (Delete the .dcif File)