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1) Clean Windows, 2) Disable antivirus and UAC, 3) Install .NET Framework and Message Queuing, 4) Install WinCC 7.5 with the correct Service Pack and Update, 5) Run the Security Controller, 6) Install licenses, 7) Re‑enable security software.
This tool can save hours of guesswork.
While the error specifically points to a license issue, it is frequently triggered by deep-seated conflicts between . This comprehensive guide analyzes the root causes of this error and provides a systematic, step-by-step framework to resolve it. Summary of Core Causes & Direct Fixes Primary Root Cause Diagnosed Symptom Definitive Resolution OS Build Incompatibility WinCC 7.5 SP2 failing specifically on Windows 10 22H2. Install Update 15 or higher for WinCC V7.5 SP2. Automation License Manager
: This error often triggers if WinCC Professional (TIA Portal) and WinCC V7.5 are installed on the same machine. These two versions are generally incompatible and cannot coexist.
