: This error is frequently tied to missing or invalid licenses. Open the Automation License Manager (ALM) and confirm you have a valid WinCC RC (Release/Configuration) or RT (Runtime) license active.
: If you are using Windows 10 version 20H2, an outdated Edge browser can break the SQL Server installation used by WinCC. Update Edge to version 86.0.622.56 or higher and restart. Verify SQL Server Services Services.msc and ensure the SQL Server (WINCC) instance and the SIMATIC Project Manager Service are running. a basic application could not be started wincc 75 best
WinCC 7.5 / "A basic application could not be started" message : This error is frequently tied to missing
The following table summarizes the most common technical causes and their respective remedies: a basic application could not be started wincc 75 best