The error "A basic application could not be started" in WinCC 7.5 usually indicates a conflict between the WinCC installation, the SQL Server instance, or the Windows operating system. Quick Fixes
Service Status: Verify that the SQL Server (WINCC) and SQL Server Agent (WINCC) services are running and set to "Automatic". A Basic Application Could Not Be Started Wincc 7.5
Check the database used by WinCC 7.5 to ensure that it is configured correctly. Verify that the database is not corrupted and that the connection settings are correct. The error "A basic application could not be
WinCC 7.5 / "A basic application could not be started" message Verify that the database is not corrupted and
Message Queuing (MSMQ): WinCC requires the "Microsoft Message Queuing" service to be running and set to "Automatic".
Understanding the Error
While the message points toward licensing, the root cause often involves SQL Server permissions, Windows update conflicts, or corrupted project files. Here is a comprehensive guide to diagnosing and fixing this issue. 1. Verify Your Licenses (Automation License Manager)