A Basic Application Could Not Be Started Wincc 7.5
Running WinCC 7.5 on a Windows version (e.g., 21H1, 22H2) not fully supported by the specific SP/Update level.
: Verify that the "SQL Server (WINCC)" service is running in Windows Services.
WinCC relies heavily on Microsoft SQL Server. If the SQL service isn't running or the instance is hung, WinCC cannot launch its basic applications.
: In SQL Server Configuration Manager, try changing the "Log on as" setting for the SQL Server Agent (WINCC) to Network Service Database Corruption A Basic Application Could Not Be Started Wincc 7.5
Fix: "A Basic Application Could Not Be Started" Error in WinCC 7.5
Search for in the Windows Start menu.
Troubleshooting "A Basic Application Could Not Be Started" in WinCC 7.5 Running WinCC 7
Open the WinCC installation folder (usually C:\Program Files (x86)\Siemens\WinCC\bin ). Find and run . Wait for the tool to terminate all hanging WinCC processes. Try reopening your project. 4. SIMATIC Shell Configuration
The project file itself may be corrupted. Create a New Project and try to activate it. If a new project works, your specific project file requires repair (restoring from a backup is recommended).
Turn off "Fast Startup" in Windows Power Options, as it can cause SQL services to initialize incorrectly during boot up. If the SQL service isn't running or the
If the basic fixes don't work, investigate these deeper technical issues: 🗄️ SQL Server Issues Service Status
Project files stored in forbidden directories or network drives. Troubleshooting Steps
Siemens provides a utility script designed to kill stuck background processes and clear temporary runtime files that prevent WinCC from starting. Close WinCC and save any open work in other programs.
This error is rarely a hardware issue — it’s almost always software or permission-related. Start with the simple fixes (admin rights, service restart) before moving to reinstallation.
Siemens has released several updates (Upd4, Upd5, etc.) that fix startup and service-related bugs.