A Basic Application Could Not Be Started Wincc 75 Hot! -

If none of the above resolves the issue, gather the following and open a ticket with Siemens Industry Online Support:

Fix: "A Basic Application Could Not Be Started" Error in WinCC 7.5 a basic application could not be started wincc 75

If the quick checks don't resolve the problem, move on to these more focused troubleshooting steps. If none of the above resolves the issue,

The "A basic application could not be started" error in WinCC 7.5 is rarely a single point of failure. It is a symptom of underlying issues with database integrity, DCOM configuration, permissions, or system services. | Step | Action | Success Rate |

| Step | Action | Success Rate | | :--- | :--- | :--- | | 1 | Run WinCC as Administrator (Properties > Compatibility) | 40% | | 2 | Disable UAC via Registry ( EnableLUA = 0 ) | 70% | | 3 | Start SQL Server service ( MSSQL$WINCC ) | 15% | | 4 | Turn off Windows Controlled Folder Access | 20% | | 5 | Re-register COM controls ( regsvr32 ) | 30% | | 6 | Repair Siemens Common Applications | 25% |