: Ensure your version of Windows (e.g., Windows 10 22H2) is compatible with your WinCC version. You may need to install a specific service pack or update, such as Update 15 for WinCC 7.5 SP2 , to resolve stability issues on newer Windows builds.
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: Delete the CPL directory and .ENV file in your project folder if you recently switched Windows users. System Requirements & Configuration A Basic Application Could Not Be Started Wincc 7.5
By following the structured checklist provided—starting with quick resets and ending with a complete OS reinstallation—you can systematically diagnose and resolve the issue. Remember the golden rules: always use a clean operating system, verify compatibility, and never ignore the importance of the SQL Server service.
: Look for Event ID 10010 (DCOM registration timeout) or other errors under Windows Logs > Application to identify if the SQL server failed to respond. Advanced Solutions : Ensure your version of Windows (e
Sometimes the project loses its connection to the local machine settings. Open the project in WinCC Explorer. Right-click on and click Properties . Ensure your computer is listed and active.
: Installing via Remote Desktop or with an active virus scanner can result in missing files. alphanumeric-only path. Then
Recent operating system updates altering security policies or DCOM settings. Step-by-Step Troubleshooting Network
Move your project to a root directory with a short, alphanumeric-only path. Then, use WinCC Explorer → File → Open to browse to the new location.