A Basic Application Could Not Be Started Wincc 75 Best Better May 2026

Troubleshooting: "A Basic Application Could Not Be Started" in WinCC 7.5

Exact error message text (and any codes)
Windows version (e.g., Win10 LTSC 2019/2021, Win11)
Whether this is a new installation or previously working project
Any recent changes (Windows update, new software, antivirus update)

Note:

Close WinCC Explorer first. These folders will be recreated. a basic application could not be started wincc 75 best

Verify Visual C++ redistributables and .NET versions required by WinCC 7.5 are installed.

If the environment is clean, the issue may lie within the project structure or the license configuration. Troubleshooting: "A Basic Application Could Not Be Started"

2. DCOM Configuration (Simatic Shell)

Siemens Basic Application Service (or CCBasicApplicationService)
Siemens Autostart Service
SQL Server (WINCC) instance