If you have a correct access code entered during installation, your Administration Window will display the number of sessions licensed to your server. If there is a problem with the access code, you will see zero sessions (both pooled and standard) in the status area of the upper-right:
Incorrect or Missing Access Code:
If you did not enter the access code during installation or maybe entered it incorrectly, click on Service Settings in the Administration Window.
By default the Administration menu will be highlighted, enter your access code in the appropriate property on the right of the screen. It is strongly recommended that you use the Clipboard to copy the key/access code from your Inventu Free Trial Registration Email to avoid mistakes!
Click apply and then close.
Note that in order to activate your access code you may need to restart the service.
To restart the Inventu Viewer Service, you can use the Taskbar Icon and click Restart.
Or, use the standard Windows Services applet, opened with:
Start >> Settings >> Control Panel >> Administrative Tools >> Services
Once the services applet is loaded, find the Inventu Viewer Emulation Service entry, right-click and select Restart: