"No valid license found" after updating from V8.0 to V8.3. Fix: Re-activate your license.
Siemens does not provide the full version as a free standalone download. Users must purchase a license (typically on DVD). If you already own a licensed version (from V3.0 onwards), you can download free upgrades to higher versions, such as V8.3 or V8.4, via the Siemens Upgrade Center .
hardware, providing advanced cloud connectivity and improved security features. Key Features of the V8.4 Update