If the primary steps do not work, consider these more intensive options:
: Download and install the latest available Update (e.g., Update 15 for SP2) for your specific WinCC 7.5 version .
WinCC 7.5 uses a named instance of SQL Server (typically WINCC ). If this instance is corrupted, the basic application cannot start because the database is the "basic application." a basic application could not be started wincc 75 best
If WinCC crashed previously, background processes may still be running, preventing a new instance from starting. The operating system sees these "zombie" processes and thinks the project is already active.
Never manually delete files within the SQL data folders ( If the primary steps do not work, consider
This error typically occurs when WinCC is unable to launch one of its core background services (e.g., Graphics Runtime, Alarm Logging, Tag Management, or the Cross-Manager). It prevents the runtime project from starting.
: Try running the reset script located on your desktop or in the WinCC installation folder. This often clears stuck background processes that prevent a fresh application start. The operating system sees these "zombie" processes and
Open Windows ( compmgmt.msc ) and go to Local Users and Groups > Groups .
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