Below is a comprehensive guide to understanding, troubleshooting, and resolving this licensing issue. Why This Error Occurs
: 6AV2107-0GA00-0BB0 (USB flash drive) or 6AV2107-0GA00-0BH0 (Download).
If logging is intentional, you must check what licenses are currently visible to the operating system.
Resolving "License Key Not Available" in WinCC Logging for Runtime Advanced
对于维护人员和自动化工程师而言，熟练掌握 ALM 的诊断技巧、理解 WinCC 的许可依赖关系，是保障生产系统稳定运行的关键能力。希望这份指南能帮你节省排查时间，让你少走一些弯路。 Resolving "License Key Not Available" in WinCC Logging
To resolve this without a license, change your storage location back to and target a local directory or a basic USB flash drive. Step 3: Transfer and Activate the License
First, confirm that the license is actually installed on the target system.
If the license exists but the error persists, use these steps to fix the communication between WinCC and the License Manager.
Data logs or alarm logs were accidentally created in the TIA Portal project, triggering the licensing requirement even if the user didn't mean to log data. Step-by-Step Resolution Guide Data logs or alarm logs were accidentally created
Once the correct license is activated, your data logs, historical trends, and alarm archives will spring to life. Remember that in automation, a missing license is rarely a bug – it is a feature waiting to be purchased.
有时 ALM 中明明显示可用的许可证，但 WinCC 仍然提示缺失。这种情况往往是因为许可证被标记为“”。常见原因：IPC 未正常关机（如突然断电），导致许可证未被释放。
to transfer the key from your storage medium to the local hard drive. Reset Project Type
The "License key not available" error for WinCC Logging for Runtime Advanced typically occurs because the base WinCC Runtime Advanced the HMI screens appear
: If the PC was shut down abruptly or suffered a power failure while Runtime was active, the license might not have been "released" correctly, leading ALM to mark it as How to Resolve the Error 1. Verify Your Configuration
The physical or digital license key was never purchased or transferred to the runtime PC.
Imagine you’ve just deployed a WinCC Runtime Advanced project to a new Industrial PC (IPC). The system boots, the HMI screens appear, but suddenly, an annoying popup declares the logging license is missing. Step 1: Check the Project Configuration The most common cause is that you’ve enabled Alarm Logs in TIA Portal. The Problem:
: The project features historical trend compilation configured under Historical Data > Data Logs .
: In TIA Portal, the "License key not available" message will appear during simulation if the license is missing from the Engineering PC. You can generally acknowledge and ignore this message for testing purposes, as it does not typically block simulation functionality. Productive Use