Windows Server Evaluation works well for testing. However, the trial lasts only 180 days. After that, the server shuts down every hour. In addition, activation warnings appear on the desktop.
Because of these limits, many administrators choose to upgrade. Fortunately, you do not need to reinstall Windows. Instead, you can convert Windows Server Evaluation to full version in a few steps. As a result, your files and roles stay intact.
This guide explains the process clearly and simply.
Why You Should Upgrade
First, the Evaluation edition is not licensed for production. Therefore, it should not run critical workloads long term.
Second, once the trial expires, forced shutdowns begin. Consequently, your services may stop without warning.
Finally, activation removes all limits. After the upgrade, the server runs normally without interruptions.
Step 1: Check the Installed Edition
Before you begin, confirm your current version.
Open Command Prompt as Administrator. Then run:
DISM /online /Get-CurrentEdition
If you see:
- ServerStandardEval
- ServerDatacenterEval
Then you are using the Evaluation edition.
Next, check available upgrade paths:
DISM /online /Get-TargetEditions
This command shows the supported target editions. Therefore, you will know what you can install.
You can also verify the edition in PowerShell:
Get-ComputerInfo | Select OsName, WindowsEditionId
Important Upgrade Rules
Before converting, review these points carefully.
You can upgrade to the same edition.
You can also upgrade to a higher edition.
However, you cannot downgrade from Datacenter to Standard.
If the server runs as a Domain Controller, demote it first. Otherwise, the upgrade may fail.
In addition, disable NIC Teaming before you continue. This step prevents network issues during the upgrade.
Most importantly, use a product key that matches your target edition.
Step 2: Convert Windows Server Evaluation to Full Version
Now you can start the upgrade process.
On the other hand, if you want Datacenter edition, run:
If you want Standard edition, run:
DISM /online /Set-Edition:ServerStandard /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula
DISM /online /Set-Edition:ServerDatacenter /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX /AcceptEula
Replace the placeholder with your valid product key.
After you press Enter, wait patiently. Sometimes the process pauses at 10%. Nevertheless, this behavior is normal. Do not close the window.
Once the command completes, restart the server. After reboot, Windows runs the full version instead of the Evaluation edition.
Step 3: Activate Windows Server
Although the edition changes, activation is still required.
If you use a KMS server, type:
slmgr /skms your-kms-server:1688
slmgr /ato
If you use a MAK or Retail key instead, enter:
slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
slmgr /ato
After that, confirm activation:
slmgr /xpr
If Windows reports permanent activation, the upgrade succeeded.
Optional: Extend the Evaluation Period
If you need more time before upgrading, you can extend the trial.
Run:
slmgr /rearm
Microsoft allows up to five resets. Therefore, the total evaluation time can reach three years.
However, once the final grace period expires, hourly shutdowns begin again. For that reason, converting to a full version remains the better solution.
Common Errors and Solutions
Sometimes the DISM command appears frozen. In that case, wait several minutes. If it does not continue, restart and try again.
If you see a product key error, double-check the edition. In most cases, the key does not match the target version.
If the system reports that the edition cannot be upgraded, you may be attempting a downgrade. Remember, Windows Server does not support edition downgrades.
When Active Directory runs on the server, demote the Domain Controller before upgrading. Otherwise, the process may fail.
Final Check After Conversion
After the upgrade, confirm everything works correctly.
First, verify the edition:
DISM /online /Get-CurrentEdition
The word “Evaluation” should no longer appear.
Next, confirm activation:
slmgr /xpr
