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: This message frequently appears during simulation in TIA Portal even if logging isn't actively being tested; for engineering purposes, it can often be ignored as it does not typically block simulation functionality. Troubleshooting Steps Check the Automation License Manager (ALM) :
: A license installed on a USB drive but not properly transferred to the computer's hard drive using the Automation License Manager (ALM) will not be recognized during runtime. : This message frequently appears during simulation in
：如果尝试本文所述方法后问题仍未解决， 请直接联系 Siemens 工业技术支持团队 ，并提供你的 ALM 许可证截图、项目 Logging 配置截图以及完整的错误信息。最有效的解决路径，往往是与官方技术支持直接沟通。 Step 4: Clear the Runtime Cache To resolve
Right-click the newly transferred license key and select (if required) or run a Check to ensure the status icon turns green. Step 4: Clear the Runtime Cache Identify the missing license If these steps do
To resolve the "license key not available" error for , you must understand that Siemens treats logging as a separate add-on. Even if you have a valid WinCC Runtime Advanced license (e.g., for 512 PowerTags), a dedicated WinCC Logging license is required for archiving process values or alarms. 1. Identify the missing license
If these steps do not resolve the issue, please provide details about your specific WinCC version and the exact actions you performed so that further, more specialized assistance can be offered.
Requires Windows 10 or later — 64-bit