License Key Not Available — Wincc Logging For Runtime Advanced Link

The error "License key not available! WinCC Logging for Runtime Advanced" occurs because logging is a separate add-on license for PC-based WinCC Runtime Advanced systems. Unlike Siemens Comfort Panels, which include logging functionality by default, PC runtimes require an additional license for any tag or alarm logging. Common Causes & Solutions

Step 2: Verify the Correct License is Selected

Sometimes the license exists, but Windows picks the wrong one. The error "License key not available

Unlike Siemens Panels, where logging is often included, PC-based Runtime Advanced requires three distinct license types to operate fully without "nag" screens: C:\AX NF ZZ (legacy USB dongle mounts as

: In some versions, the SmartServer service starts automatically and may request a license even if not actively used. You can disable the "CoRTSmartServer" service in Windows Services to stop the prompt. Defective Licenses WinCC will not find it.

• C:\AX NF ZZ (legacy USB dongle mounts as a drive)
• Or via Automation License Manager on a central server. If the license is on the desktop or in a subfolder, WinCC will not find it.