a basic application could not be started wincc 75

Troubleshooting the "A Basic Application Could Not Be Started" Error in WinCC 7.5

Step 3: Check Configuration Settings

  1. Open the WinCC 7.5 configuration editor.
  2. Verify that the basic application is properly configured and enabled.
  3. Check for any syntax errors or missing dependencies.

Step 1: Check the Windows Event Viewer (Critical Diagnosis)

Before changing settings, you need evidence of what failed.

  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.
    • Look for "Application Error" (Event ID 1000): This will tell you which .exe crashed (e.g., CCProjectMgr.exe, RedundancyServer.exe, S7oPatch.exe).
    • Look for ".NET Runtime" errors: Indicates a broken .NET Framework.

Step 6: Check the Simatic Security Settings

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

  1. Go to Start > Siemens Automation > Simatic Security Settings.
  2. Navigate to Security Settings > WinCC.
  3. Ensure "Allow Remote Connections" is enabled (even for local projects).
  4. Under "User Rights", add your Windows user account (e.g., DOMAIN\YourName) and assign "Full Control".
  5. Apply and restart.

5. Move the Project to a Local Drive

WinCC does not support running projects from network drives, USB sticks, or cloud-synced folders (OneDrive, Dropbox).