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.
Open the and navigate to Programs and Features . Click on Turn Windows features on or off on the left panel.
Ensure the ( almservice.exe ) is actively running under Windows Services ( services.msc ). 3. Match User Permissions & Add to SIMATIC_HMI Group a basic application could not be started wincc 75 best
C:\Program Files (x86)\Siemens\WinCC\Diagnostics\BasicApplication.log
Ensure and .NET Framework 4.8 Advanced Services are fully checked. At the very end of a successful WinCC
| Check | Action | |-------|--------| | | Right-click WinCC Explorer → Run as administrator | | Disable Antivirus temporarily | Especially McAfee, Norton, or Kaspersky (known to block WinCC processes) | | Check Windows Event Viewer | Look for Application errors around the same timestamp | | Reboot PC | Clears stuck processes |
: For WinCC 7.5 SP2 on newer Windows builds, users frequently need to install or higher to resolve startup issues. 2. Resolve SQL Server and Browser Issues Click on Turn Windows features on or off on the left panel
Does the error happen with or just one specific project ?
If the error occurs only with one specific project, the project database files may be locked or corrupted. Close all Siemens software.
The Basic Application relies on specific Windows services. Verify they are running.