If you're seeing a "Validation Code" prompt or error in , you're likely stuck at the license authorization stage. While version 2.7 is older (released around 2013–2014), many engineers still use it for legacy projects. This guide explains why validation fails and how to resolve it without illegal cracks (which risk malware and legal action).
: Use the EPLAN License Client to login with your dongle/serial and customer number, then select "Request Validation Code" .
It is important to distinguish these two, as they are often confused during setup:
: If an expiration date needs extension for a 2.7 license, a new Validation Key must be inserted into the EPLAN License Manager 5. Conclusion