Once a new license key has been imported to existing On-Prem environment, you may notice a pop-up message in your GPMC console mentioning your old license key is getting expired soon.
One or more similar messages may appear in MMC/GPMC when editing a GPO.
As example, this can occur if you have two license GPOs in your domain.
For instance, two license GPOs are linked with the following expiration dates:
GPO 1: Expires March 1, 2023
GPO 2: Expires March 1, 2024
Note: The rest of this KB is generally around your GPMC editing machine and the pop-ups within the GPMC. If you’re getting client-side pop-ups, please refer to this article: https://kb.policypak.com/kb/article/1250-how-do-i-make-the-grace-period-licensing-pop-up-go-away/
Resolution for the Admin’s GPMC editing station:
Tip: You can use the LT tool to search through and find OLD licenses so you can be sure you only have one license remaining. https://kb.policypak.com/kb/article/490-using-lt-for-license-cleanup/
Now, on your machine, the one with the GPMC…
If you still get pop-up messages and the messages reference the registry, you should check under the following registry keys on your GPMC management station for any old information relating to the old license.