Ensure there are no spaces, dots, or special characters (like @, #, %) in the folder names. 3. Reset the WinCC Project
The error message "A basic application could not be started" in WinCC V7.5 is
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) A Basic Application Could Not Be Started Wincc 7.5
Encountering the error when launching a WinCC 7.5 project can be a significant roadblock. This issue typically points to deep-seated conflicts between the WinCC software, its underlying SQL database, or the Windows operating system .
Before diving into the troubleshooting steps, it's essential to understand the common causes of the "A basic application could not be started" error in WinCC 7.5: Ensure there are no spaces, dots, or special
: WinCC relies heavily on a specific instance of MS SQL Server. If SQL Server was installed incorrectly, or if a previous version of WinCC was uninstalled without removing all SQL components, this error often occurs. Windows Feature Incompatibilities :
Right-click on the Windows Start Button and select . Navigate to Local Users and Groups -> Groups . Find the SIMATIC_HMI group. Ensure your username is a member of: SIMATIC
Ensure the correct network adapter (the one connected to the PLC network or local loopback) is selected.
"A Basic Application Could Not Be Started" in WinCC 7.5 usually indicates a failure in the software's communication with the underlying SQL database or a mismatch between the software and the operating system version 🛠️ Core Solutions To fix this, follow these steps in order: Check Windows Compatibility : Ensure your Windows version matches the Siemens Compatibility Tool
: If your PC is not connected to a network, the project may take a very long time to open or fail if it cannot find the terminal bus. Ensure your network cards are correctly ordered and functional.
a common issue typically triggered by software incompatibilities, licensing errors, or a corrupted SQL Server instance Common Causes & Solutions Software Incompatibility