Can we change Windows OS from Datacenter version to Standard version - Microsoft Community
You can do this by using the "DISM" command-line tool to change the edition of Windows Server. However, you will need a valid Standard edition product key to activate the new edition. Here are the steps to follow:
1. Open an elevated command prompt on the server.
2. Type the following command and press Enter: DISM /Online /Set-Edition:ServerStandard /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula
3. Replace the "XXXXX-XXXXX-XXXXX-XXXXX-XXXXX" with your valid Standard edition product key.
4. Wait for the command to complete and then restart the server.
After the server restarts, it should be running the Standard edition of Windows Server.