A Basic Application Could Not Be Started Wincc 75 Jun 2026

WinCC 7.5 and its Service Packs have strict Windows version requirements. For example, using WinCC 7.5 SP2 on certain builds of Windows 10 (like 22H2) may require specific updates (e.g., Update 15) to function.

Navigate to the WinCC installation directory: C:\Program Files (x86)\Siemens\WinCC\bin . Run Reset_WinCC.vbs as Administrator and your PC. Update WinCC :

If basic steps fail, the following deep-level fixes are often required: a basic application could not be started wincc 75

WinCC 7.5 requires administrative privileges. If the user launching runtime does not have full read/write access to the project folder, %ProgramData%\Siemens\ , or the SQL Server instance, basic apps will abort.

WinCC V7.5 relies heavily on SQL Server (typically SQL Server 2014 or 2016 depending on the specific WinCC update). If the SQL instance (e.g., WINCC ) is stopped, paused, or corrupted, the basic applications (Tag Logging, Alarm Logging) cannot attach to their databases. WinCC 7

Install the latest updates for WinCC (e.g., Update 15 for SP2) and ensure Microsoft Edge is up to date, as older versions can cause SQL communication failures.

Running WinCC under a user account without sufficient privileges (even if the user is an administrator in a domain) can trigger this error. The logged-in Windows user must be a member of the local "SIMATIC HMI" group on the machine. Domain environments add another layer of complexity: network adapter selection for the Terminalbus, IP assignment from domain servers, and Active Directory permissions can all contribute to the failure. Run Reset_WinCC

Delete these temporary files. (WinCC will automatically regenerate clean versions of these files when the project successfully opens).

Below is a comprehensive guide to understanding why this error occurs and the step-by-step methods required to resolve it. Understanding the Root Causes