Corrupted cache causes false “not found” messages.

Troubleshooting the "License WinCC Comfort Was Not Found" Error

When working with Siemens TIA Portal, encountering the message is a common hurdle. This error typically triggers when you attempt to open, compile, or download a project containing a Comfort Panel (or a higher-tier HMI) without the appropriate license key activated on your machine. The Root Causes

You might have the software installed, but the Automation License Manager (ALM) cannot find the specific "Comfort" or "Advanced" floating license required.

[Your Name/Technical Staff]

The license must reside on a USB stick or an SD card—the non-volatile storage—so it persists through reboots and updates. If the HMI looks at the internal storage and finds nothing, the error triggers.


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