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

Troubleshooting Guide: "A Basic Application Could Not Be Started" in WinCC v7.5 – 7 Best Fixes

If you are a Siemens WinCC user (specifically version 7.5), you may have encountered a frustrating roadblock right at startup: the dreaded error message "A basic application could not be started."

Estimated resolution time: 15–45 minutes depending on root cause. a basic application could not be started wincc 75 best

Introduction

The error message "A basic application could not be started" (often accompanied by "please check your software license") is a common issue in SIMATIC WinCC 7.5 that typically indicates a software incompatibility, a broken SQL instance, or a licensing conflict. 1. Verify Compatibility and Software Updates Troubleshooting Guide: "A Basic Application Could Not Be

• mfc140u.dll
• vcruntime140.dll
• msvcp140.dll
  → Solution: Reinstall VC++ Redistributables (2015-2022).

If none of these work, please share:

Action: Once you identify the failing module, download the relevant update from Microsoft or Siemens Support. mfc140u

from your WinCC installation's bin directory or search for "Reset-WinCC" in your start menu. Restart your PC afterward. Install Latest Updates

• Provide a concise checklist you can print and follow onsite.
• Generate the exact PowerShell commands to collect environment details and logs.
• Draft an email to Siemens support including the required logs and information.