This guide shows you how to download, install and activate Windows Server 2025 Standard with your Retail key.
⬇️ Download – Windows Server 2025
The ISO from the Microsoft Evaluation Center (after a short registration) contains Standard and Datacenter as evaluation versions. You choose the edition during installation and then convert it to the full version with your key. Server 2025 is only available as a 64-bit version.
1. Create installation media
Download the ISO and write it to a USB flash drive with at least 8 GB using Rufus or the Windows USB tool.
2. Boot from the media
Boot the server from the USB flash drive (boot menu via F2, F11 or Del, depending on the manufacturer).
3. Choose the edition
Select Windows Server 2025 Standard. We recommend the option with Desktop Experience if you want a graphical interface; Core is the lean option without a desktop.
4. Installation
Choose the custom installation and the target partition. After the restart, set the administrator password.
5. Activation
An installation from the evaluation ISO is initially an evaluation version in which entering the key directly does not work. Open Command Prompt as administrator, run DISM /online /Set-Edition:ServerStandard /ProductKey:YOUR-KEY /AcceptEula and confirm the restart that follows. Then check the activation and, if necessary, start it with slmgr /ato. If you installed Windows Server from regular (non-evaluation) media, enter the key under Settings > System > Activation or with slmgr /ipk YOUR-KEY followed by slmgr /ato.
After installation
- Install updates and restart the server.
- Add server roles via Server Manager.
- Check the activation status with
slmgr /xpr.
Need help?
Write to us at support@officelizenz24.de – our team is happy to help you with download, installation and activation, Mon–Sun from 10:00 to 22:00.
