So you've bought Express Server to serve out all of the compressed data that you've created using your GeoExpress software, but no one has sent you a Serial Number to enter when installing. Where do I find my Serial Number so I can go ahead and activate my Express Server?
Express Server is licensed without the use of a Serial Number - all you need is your Express Server Locking Code. To license Express Server, after installation open up your Express Server Admin Application and navigate to the Status menu. Now click on Details and you should see your Locking Code listed. Highlight and Copy your Locking Code and submit it to Extensis support. Support will email you back your Express Server license file, which can be added to your server from within the Express Server Admin Application by navigating to Status > Details > Upload License File.