A Basic Application Could Not Be Started Wincc 75 [best] May 2026

This error — "A basic application could not be started" in WinCC (version 7.5) — typically appears when the Siemens HMI/SCADA runtime fails to initialize core system components.

• The Scenario: A user closes a project, but the CCProject or runtime processes hang in the background. When a new project is started, the system conflicts with the ghost processes.
• Verdict: This is the first place technicians should look.

Check Licenses: Confirm you have a valid WinCC 7.5 license installed via the Automation License Manager. a basic application could not be started wincc 75

1. Open Control Panel > Programs and Features.
2. Find "Siemens Automation Common Applications" (version depends on your install).
3. Click Repair.
4. Reboot.

By following these steps, you should be able to resolve the "A basic application could not be started" error in WinCC 7.5. If the issue persists, consider reaching out to Siemens support or a qualified WinCC 7.5 expert for further assistance. This error — "A basic application could not

Check Windows and dependency components

Step 3: Run WinCC Project Duplicator

Project corruption is a leading cause. Use the WinCC Project Duplicator (Start menu → Siemens Automation → WinCC → Tools): The Scenario: A user closes a project, but

1. Press Win + X and select Event Viewer.
2. Navigate to Windows Logs > Application.
3. Reproduce the error (try to start your WinCC project).
4. Immediately refresh Event Viewer (F5). Look for Error or Warning entries from the last few seconds.

   Step 6: Check the Simatic Security Settings

   A locked-down Windows 10/11 IoT or Server installation may block WinCC services.