A Basic Application Could Not Be Started Wincc 75 Best |top| Jun 2026

The error " A basic application could not be started " in WinCC 7.5

Right-click the application and select . Click the Repeat Settings or Apply button.

: Broken dependencies caused by Windows updates (such as the Microsoft Edge/SQL bug on Win10 20H2).

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If the error only occurs when opening one specific project, the project's configuration cache might be corrupted. a basic application could not be started wincc 75 best

Ensure you have the Siemens Compatibility Tool installed to verify your Windows 10/11 version (e.g., 22H2) is supported.

How to Fix the WinCC 7.5 "A Basic Application Could Not Be Started" Error

WinCC requires a valid Runtime license to start. If the license dongle is missing, broken, or if the "Power Tags" count in the project exceeds the license limit, the startup will fail.

Remember: WinCC 7.5 is a robust system, but it depends heavily on the underlying Windows infrastructure. Treat your WinCC engineering station like a medical life-support system – no unnecessary software, no automatic updates, and always, always keep a full backup image of the hard drive. The error " A basic application could not

Alternatively, navigate to the WinCC installation directory (usually C:\Program Files (x86)\Siemens\WinCC\bin\ ) and run CCProjectReset.exe .

The “A basic application could not be started” error in WinCC 7.5 is almost always due to permissions, antivirus blocking, license issues, or SQL Server problems. By systematically working through the steps above – with special attention to Event Viewer, antivirus whitelisting, and license validation – the issue can be resolved without reinstalling the entire engineering environment.

Siemens WinCC 7.5 is a robust SCADA system used globally for industrial automation. However, engineers and system integrators frequently encounter a frustrating startup roadblock: the error.

Use this tool to duplicate your problematic project to a brand-new folder. This public link is valid for 7 days

Over time, security updates or third-party software can unregister WinCC’s custom DLLs, breaking the startup sequence. Re-registering forces Windows to recognize them again.

At the very end of a successful WinCC installation, the "SIMATIC Security Controller" runs to configure the system's security settings. If this process was interrupted or failed, it can cause the "basic application" error.

: 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.

The quickest way to solve this on newer operating systems is verifying dependencies via the official Siemens Compatibility Tool.