Troubleshooting WinCC 7.5: "A Basic Application Could Not Be Started"
Sometimes WinCC thinks a project is already open on another station. Navigate to your WinCC project folder. Look for a file ending in .
Open Command Prompt as Administrator and run: A Basic Application Could Not Be Started Wincc 7.5
The Simatic Shell manages project browsing. If it crashes, WinCC cannot see any projects.
The most common cause for this error in WinCC 7.5, particularly on modern Windows operating systems (Windows 10/11 or Windows Server 2016/2019/2022), is the operating system security posture. Troubleshooting WinCC 7
Start with (Fix 1 and 2), then verify SQL Server health (Fix 4), and finally attack path length (Fix 3). In 90% of cases, these three solutions resolve the issue. For the remaining 10%, a project duplication or registry cleanup will bring your HMI back online.
: Verify that your specific Windows version (including the build number) is compatible with WinCC 7.5 using the Siemens Compatibility Tool . For instance, users on Windows 10 Pro 22H2 often require for WinCC 7.5 SP2 to resolve this. Verify Licensing Open Command Prompt as Administrator and run: The
Once you resolve the issue, implement these best practices to avoid recurrence:
to ensure all necessary local security settings and firewall exceptions are correctly applied. Permissions and Groups : Confirm your Windows user account is a member of both the Administrators SIMATIC HMI local groups. Technical Fixes
One of the most common, yet cryptic, errors encountered during project deployment or runtime activation is the dreaded message: