: You must acquire the "WinCC Logging for Runtime Advanced" license key (e.g., MLFB: 6AV2107-0GA00-0BB0).
The error message typically occurs because Siemens WinCC Runtime Advanced requires a dedicated, separate license for logging functions (data and alarm logs) that is not included with the standard Runtime license. Core Reasons for the Error
Which (e.g., V17, V18, V19) are you currently running? : You must acquire the "WinCC Logging for
Encountering the error in Siemens WinCC Runtime Advanced can immediately halt your industrial automation project. This specific error typically triggers when a WinCC Runtime application attempts to execute data logging or alarm logging functions without the appropriate license installed on the host PC.
这会输出系统上所有已安装许可证的完整列表，帮助你快速确认 Logging 许可证是否真的存在。 Encountering the error in Siemens WinCC Runtime Advanced
: Background services or stuck processes can interfere with the license check. Running the Reset_WinCC.vbs script safely resets these processes.
Resolving "License Key Not Available" in WinCC Logging for Runtime Advanced Running the Reset_WinCC
If the correct license is clearly visible and green in the Automation License Manager, but WinCC Runtime Advanced still claims it is missing, the communication link between the Runtime software and the ALM service is broken.
Select your local drive, and look at the installed keys.
如果项目是从早期版本的 TIA Portal（如 V11、V12）迁移到 V13 或更高版本，Logging 功能的许可映射可能发生了变化，导致系统误认为需要 Logging 许可证。