Open the WinCC installation folder (usually C:\Program Files (x86)\Siemens\WinCC\bin ).
This error brings production lines to a halt. It prevents the WinCC runtime from launching, blocks project duplication, and often refuses to provide a specific reason for the failure. A Basic Application Could Not Be Started Wincc 7.5
Before fixing the error, you must understand what WinCC is trying to do. The phrase "basic application" refers to the core background services and components that WinCC requires to bootstrap a project. These include: Open the WinCC installation folder (usually C:\Program Files
If WinCC crashed previously, it leaves behind "lock" files that trick the system into thinking the project is already open. blocks project duplication
If all else fails, the project database is corrupt.