Ektron CMS400.Net Reference
If you download the executable (.exe) file, you are prompted to enter a license key during installation. If you do not, enter it by choosing Workarea > Settings > Setup and clicking Edit (). Next, add the license key to the License Key(s) field.
If you upgrade Ektron CMS400.NET and want to replace the old license key with a new one, choose Workarea > Settings > Setup and click Edit (). Next, add the license key to the License Key(s) field. On the other hand, if you want to add new keys in addition to old keys, create a comma-delimited list of keys in the License Key(s) field.
When cutting and pasting license keys, keep the full license key intact without adding or deleting characters. License keys that are changed in any way render Ektron CMS400.NET inoperable.