This tool will automatically re-configure firewall rules, registry permissions, and DCOM settings required for WinCC 7.5 to communicate with its own components. 5. Check for Folder Permissions and DCF Files
The error message is one of the most common and frustrating issues faced by Siemens WinCC 7.5 users. It typically halts your project activation or prevents the WinCC Explorer from opening entirely. a basic application could not be started wincc 75 best
Follow these troubleshooting steps in order, moving from the most common quick fixes to advanced system restorations. 1. Verify User Group Memberships It typically halts your project activation or prevents
Add your Windows user account to the SIMATIC_HMI group. Steps: Open Computer Management ( compmgmt.msc ). Navigate to Local Users and Groups > Groups . Double-click SIMATIC_HMI . Click Add... and enter your Windows user name. Restart the computer . 3. Check Network Adapter Binding (Terminalbus) Verify User Group Memberships Add your Windows user
C:\ProgramData\Siemens\WinCC\Common\AlarmControl\ C:\ProgramData\Siemens\WinCC\Common\TagLogging\ C:\Users\[YourUsername]\AppData\Local\Siemens\WinCC\RTTemp\
Installing older WinCC 7.5 base versions or early Service Packs (SP1/SP2) on modern Windows 10/11 updates (like 22H2) regularly triggers this crash.