Because of changes in our licencing system and in combination with a Windows update the serial number of some PCs may have changed. This will cause the licence-key to get invalid. This is no problem, because you can get a new licence key by login in to your customer area and there click on "licences". Then insert the new serial number and you will get a new licence key.
This move show the procedure:
http://www.haenlein-software.com/HS/Vid ... TAUSCH.php
(Sorry, it's in German. But the pictures tell's more as 1000 words.

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