解决方案：彻底审查项目，删除所有残留的 Logging 配置。
You cannot simply install a Runtime license and expect full archiving capabilities without the associated add-on or specific "Archive" license keys. I'll follow the search plan outlined in the instructions
user wants a long article about resolving the "License Key Not Available" error for WinCC Logging in Runtime Advanced. I need to provide comprehensive troubleshooting guidance. I'll follow the search plan outlined in the instructions. I'll start with the first round of searches. search results have provided a good starting point. I have several Siemens support pages and forum discussions that seem relevant. I'll open them to gather detailed information about the error causes and solutions. search results provide a good mix of forum posts, Siemens support pages, and blog articles. I'll also search for "WinCC Logging for Runtime Advanced license key not available missing" to find more specific solutions. have gathered sufficient information from various sources. I will now structure the article into an introduction, an overview of WinCC logging and licensing, the license key error, a systematic troubleshooting guide covering license and project issues, a section on advanced diagnostics, a step-by-step resolution summary, and a conclusion. The citations will be drawn from the provided search results. you're working with Siemens WinCC (TIA Portal) and see the message you've encountered one of the most common licensing hurdles in industrial automation. You've already laid a solid foundation—you've probably installed the right software and have your HMI project up and running—only to have this error pop up, claiming a crucial license is missing. But don't worry; you're far from alone, and fortunately, the solution is usually straightforward once you understand the logic behind it. This guide will walk you through every step to get rid of this message and get your system fully operational. I have several Siemens support pages and forum