So what actually happens when an evaluation version expires? You will notice a few things, like the ConfigMgr administrator console very clearly tells you it expired.
As you can see from above you will still be able to open the console but only with Read permisions. Trying to perform actions via PowerShell will give you an error saying that you don’t have the proper permissions:
Looking in the SMS provider log file (smsprov.log) you will also see errors indicating the lack of permissions.
You will also notice that both the SMS Executive Service and Site Component Manager service is not running. You can restart the services, but they will automatically stop again after a short while.
How do you migrate the evaluation copy to production?
Migration the evaluation copy to production is done by running ConfigMgr Setup on the site server and select Perform site maintenance or reset this site.
Select Upgrade the evaluation edition to a licensed edition, enter the license key and finish the wizard.
The setup process will take a few seconds, detailed information are written to the ConfigMgrSetup.log file.
After setup, restart the services log on to the ConfigMgr console and you are ready to go manage your enterprise once again.