After a successfull AxCMS.net installation you see a red error message over every page in MS and LS saying "License file is not valid for current configuration. Visit AxCMS.net website to get your free license!":
The URL configured in your web.config (both MS and LS) under LiveSystemHostName
<!-- root URL of LIVE webserver -->
<add key="LiveSystemHostName" value="http://localhost" />
does not match the value for LiveSystemHostName in the license file:
A) If you don't have a license file for your LiveSystemHostName, request it on AxCMS.net website.
B) If you just downloaded a free AxCMS.net, you should have recieved a localhost-license automatically - check you emails.
C) If you misspelled the value in web.config - correct it (every character is important, e.g. avoid the "/" at the end). Do not change the license file - it is digitally signed. If you manipulate it, the system will reject the file.
Licensing of AxCMS.net is described in details in Installation Guide (see below)