A Basic Application Could Not Be Started Wincc 7.5 [2021] -

WinCC 7.5 / "A basic application could not be started" message

Always ensure you have a valid backup of your WinCC project before performing repairs or reinstallations. A Basic Application Could Not Be Started Wincc 7.5

Right-click > Manage > Local Users and Groups > Groups . Ensure your username is a member of: SIMATIC HMI SIMATIC HMI Viewer Administrators 6. Repairing the Project (Security Controller) WinCC 7

Often, a previous WinCC session did not close correctly, leaving a process running in the background that blocks the new startup. Right-click (or My Computer) and select Manage

WinCC requires the logged-in Windows user to be a member of specific local groups. This is the #1 fix for "Basic Application" errors. Right-click (or My Computer) and select Manage . Navigate to Local Users and Groups > Groups . Ensure your user account is added to: SIMATIC HMI SIMATIC HMI Viewer (if applicable) Administrators

Open the (found in the Siemens folder in the Start menu).

There are few things more stressful in an automated production environment than clicking on your WinCC Runtime icon and being greeted by a vague, brick-wall error message instead of your HMI.