Can I upgrade to Windows 11 Pro from Windows 10 Home without reinstalling?

Yes, you can upgrade to Windows 11 Pro from Windows 10 Home without doing a clean reinstall. The process is straightforward and designed to keep your files and programs intact.

Microsoft provides a legitimate KMS (Key Management Service) client key that allows for 180 days of activation, intended for enterprise environments. We can use this for a temporary, genuine activation.

How to upgrade to Windows 11 Pro from Windows 10 Home:
1. Open Command Prompt as Administrator again.
2. Install the KMS Client Key:
Type the following command and press Enter:

slmgr /ipk VK7JG-NPHTM-C97JM-9MPGT-3V66T

This key tells your system to look for a KMS server to activate.
3. Set a Public KMS Server:
To activate, you need to point your system to a KMS server. There are a few public, non-Microsoft ones that are known to work for this purpose. Type:

slmgr /skms kms8.msguides.com

4. Activate:
Finally, force the activation attempt:

slmgr /ato

5. Check Activation:
Go to Settings > Update & Security > Activation. It should now show "Windows is activated with a digital license" or similar. The activation is valid for 180 days and will automatically renew if it can contact the same KMS server.