Close all WinCC applications and run the Reset_WinCC.vbs script located in the WinCC installation directory (usually under Siemens/WinCC/bin ). Restart your computer after it finishes .

WinCC stores project data and runtime configurations in user-specific folders.

For advanced diagnostics, Windows logs the actual failed application.

The "Security Controller" tool aligns Windows security settings with Siemens requirements. Search for in your Start menu. Click Repeat Settings .

Even if your account is an administrator, Windows UAC can block certain automation components.