A Basic Application Could Not Be Started Wincc 75 'link' Today
In WinCC V7.5, the error "A basic application could not be started" typically indicates a failure during the initialization of core components like the SQL Server instance, DCOM registration, or license validation. This often occurs when creating a new project or opening an existing one. 🔍 Root Causes
- Open Control Panel > Programs and Features.
- Find Microsoft SQL Server (Version) – Do not uninstall.
- Right-click > Change > Repair.
- Follow the wizard. Insert your WinCC DVD if prompted.
Step 1: Check the Windows Event Viewer (Critical Diagnosis)
Before changing settings, you need evidence of what failed. a basic application could not be started wincc 75
Re-run Security Controller: Open the SIMATIC Security Controller from the Start menu and select "Repeat Settings" to ensure all necessary DCOM and registry permissions are correctly applied. In WinCC V7
⚠️ Re-enable UAC after troubleshooting for security. Open Control Panel > Programs and Features
Match Versions: Ensure that if you migrated a project from v7.4 to v7.5, you ran the Project Migrator tool first. You cannot simply open an older project file directly.
"A basic application could not be started" in WinCC 7.5 often indicates a mismatch between the software version and the Windows operating system, or issues with user permissions and required background services Quick Fixes to Try First Run as Administrator : Right-click the WinCC Explorer shortcut and select Run as Administrator to ensure all processes have necessary permissions. Reset WinCC : Go to the WinCC installation folder (e.g., C:\Program Files (x86)\Siemens\WinCC\bin Reset_WinCC.vbs . Restart your computer afterward. Verify User Groups : Ensure your Windows user account is a member of both the Administrator SIMATIC HMI local user groups. Common Root Causes and Solutions
Step-by-Step Troubleshooting Guide
Try the following solutions in order. Most cases are resolved by steps 1–3.