License Key Not Available Wincc Logging For Runtime Advanced Link (2026)

: Sometimes a "license" error is triggered by the runtime being unable to access the logging directory.

Verify if a license named is present and has a green checkmark. : Sometimes a "license" error is triggered by

The "link" in the error message refers to the project linking to the correct license feature. where logging is often included

Unlike Siemens Panels, where logging is often included, PC-based Runtime Advanced requires three distinct license types to operate fully without "nag" screens: in the Siemens ecosystem

Many engineers assume that a standard license covers everything the HMI does. However, in the Siemens ecosystem, data archiving (storing trends and alarms to a hard drive or SD card over long periods) is considered a premium add-on feature.