: If the error persists, uninstall WinCC and the SQL instance separately, then reinstall both from scratch.
: Verify that the SQL Server (WINCC) and SQL Server Agent (WINCC) services are running and set to "Automatic". A Basic Application Could Not Be Started Wincc 7.5
: In SQL Server Configuration Manager, try changing the "Log on as" setting for the SQL Server Agent (WINCC) to Network Service Database Corruption : If the error persists, uninstall WinCC and
: Ensure your version of Windows (e.g., Windows 10 22H2) is compatible with your WinCC version. You may need to install a specific service pack or update, such as Update 15 for WinCC 7.5 SP2 , to resolve stability issues on newer Windows builds. You may need to install a specific service
This will re-apply necessary DCOM and registry permissions that WinCC needs to launch its core components. 7. Rebuild the Project Header
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