Transfer a Windows License to a New PC: What Works in 2026

You can transfer a Windows license to a new PC, as long as it’s a Retail one. Remove the key from the old computer. Type it into the new one. A license that came preinstalled stays with the machine it shipped on.

So the first job isn’t moving anything. It’s finding out which kind you have. I’ll show the check, the move, and what to do when the new PC says no.

First, check what kind it is

One command on the old PC. No administrator window needed.

slmgr /dli

A small window opens. Read the Description line.

One caution. That line reflects the key that’s installed right now, not a receipt. Keep the order email as well.

All three kinds are compared in Retail vs OEM vs Volume license.

What Microsoft’s terms say

The rule comes from section 4 of the Microsoft license terms. Short quotes, so nobody has to take my word for it.

Germany and a few other countries fall outside this section. Local law decides there. Volume customers follow their volume agreement, not these terms.

The terms set no number of moves. One device at a time is the limit that matters.

Where the key is hiding

Lost the 25 characters? Start with the order email. A boxed copy has them on a card inside.

Bought an upgrade in the Microsoft Store app? Then there’s no key at all. That purchase lives on your account, and the section on that further down is yours.

The system itself only shows the last five characters. One more check tells you what the motherboard carries:

(Get-CimInstance -ClassName SoftwareLicensingService).OA3xOriginalProductKey

Run it in PowerShell. A key in the answer was put there by the PC maker, so it’s OEM and stays with that board. An empty line? No factory key on that board.

How to transfer a Windows license to a new PC

Retail confirmed? Then it’s five steps. Have the 25-character key ready before you touch the old PC.

1. Find the key. It’s in the order email, or on the card in the box.
2. On the old PC, open Command Prompt as administrator and remove the key. The two commands are below.
3. Restart the old PC. It now reports itself as unlicensed.
4. On the new PC, install the same edition. Then open Settings, System, Activation and press Change next to Change product key.
5. Type the key and press Activate. Wait for “Windows is activated”.

The two commands for step 2. The first uninstalls the key, the second wipes it from the registry.

slmgr /upk
slmgr /cpky

A note on honesty. Microsoft documents both commands but publishes no step-by-step for moving a license. This sequence is what admins have used for years, and it does what the terms ask: the key leaves the old device.

On Windows 10 the last stretch reads differently. Settings, Update & Security, Activation, then Change product key.

Prefer commands on the new PC too? Same two as always, in an administrator window.

slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
slmgr /ato

Four moves people actually make

The second row surprises people. A new laptop already has a license, so the old key isn’t needed to make it work. I’d only move it when the old key is Pro and the laptop came with Home.

How long does all this take? The commands, a minute. The activation, usually another one. A clean install on the new machine is the slow part, and I’d set aside an evening for that.

When the old PC is dead

You can’t run anything on it. Fine. It isn’t using the key either.

Enter the key on the new PC as usual. If activation refuses because the key is still tied to the old hardware, go the offline route through the Product Activation Portal. The steps are in our Windows 11 activation guide.

Digital license and a Microsoft account

No key anywhere, just a status line that mentions a digital license linked to your Microsoft account. Then the Activation troubleshooter is your tool.

• On the new PC, open Settings, System, Activation and press Troubleshoot.
• Choose “I changed hardware on this device recently” and sign in.
• Tick “This is the device I’m using right now” and press Activate.

Microsoft describes this flow for a hardware change on the same device, a new motherboard for instance. On a replacement PC, I’d expect it to work only with a Retail license behind it. An OEM license in that list won’t come across.

It also needs the same edition and the same account as before.

Clear the old PC from your account

Sold or scrapped the old machine? I’d take it off the device list too.

• Sign in to your Microsoft account on the web and open Devices.
• Pick the old PC and choose Remove device.

This tidies the list the troubleshooter shows you. It doesn’t pull the key out of that PC, so we’d still run the uninstall step first.

Errors after the move

Other codes live in the activation errors list.

When the key can’t move

OEM on the old machine? Then the new PC needs its own key. That’s not a trick of ours. It’s section 4 again.

Need a key that actually sticks? Ours is Windows 11 Pro, emailed the second you pay. Staying on the older system? Windows 10 Pro is there too. We’re a trusted reseller with genuine keys.

The two kinds, side by side and in more detail: OEM vs Retail keys explained.

Before you wipe the old PC

Doing a fresh install on the new machine? The clean install guide covers the USB stick and the setup screens.

Mistakes we see most

The first one is by far the most common in our chat. A laptop key looks like any other key, and nothing on the sticker says it can’t travel.

Where these steps apply

Windows 11 and Windows 10, Home and Pro, with a Retail key. Command names and quotes come from Microsoft’s pages as they read in November 2026.

Sources I checked the steps against:

• Microsoft Learn: Slmgr.vbs options
• Microsoft Support: Reactivating Windows after a hardware change
• Microsoft Support: Get help with Windows activation errors

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