Please note the following:
- You can only do upgrades. You CANNOT downgrade
- The server you upgrade cannot be a domain controller (demote, upgrade, promote)
- This works on Standard, Enterprise edition, both full & core installations.
- You cannot switch form core to full or vice versa. It’s edition upgrade only, not for switching type of install.
Upgrade Scenario:
From Windows Server 2008 R2 Standard to Windows Server 2008 R2 Enterprise or Windows Server 2008 R2 Datacenter.
From Windows Server 2008 R2 Standard Server Core to Windows Server 2008 R2 Enterprise Server Core or Windows Server 2008 R2 Datacenter Server Core.
From Windows Server 2008 R2 Foundation to Windows Server 2008 R2 Standard.
To determine the installed edition, run:
DISM /online /Get-CurrentEdition
To check the possible target editions, run:
DISM /online /Get-TargetEditions
To Start the upgrade, run;
DISM /online /Set-Edition:<edition ID> /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
Where XXXXX-XXXXX-XXXXX-XXXXX-XXXXX is the product key.
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