License Key — Not Available Wincc Logging For Runtime Advanced Link

If you see the license in ALM but WinCC still complains, the "link" is broken.

Solution A: Re-Transfer the License

Solution B: Use the "License Usage" Diagnostic If you see the license in ALM but

Solution C: Clear License Cache Siemens licenses create a hidden cache file. Corrupt cache breaks the "link." Solution B: Use the "License Usage" Diagnostic

Follow this systematic workflow to resolve the issue. Solution C: Clear License Cache Siemens licenses create

To avoid seeing "License key not available for WinCC logging" again: