Yes, in most cases you can use a Windows 10 key on Windows 11: a genuine Windows 10 Home or Pro product key normally activates the matching Windows 11 edition, because Microsoft treats the move from Windows 10 to Windows 11 as a free upgrade. The key must match the edition, the PC must meet Windows 11 requirements, and OEM keys stay tied to their original device.
| Your situation | Will the Windows 10 key work on Windows 11? | What to do |
|---|---|---|
| Genuine Windows 10 Pro retail key, same or new PC | Usually yes, for Windows 11 Pro | Enter it during setup or in Activation settings |
| Genuine Windows 10 Home key | Usually yes, for Windows 11 Home only | Install Home, or buy a Pro upgrade key |
| PC already upgraded from activated Windows 10 | No key needed: a digital licence exists | Reinstall the same edition and let it activate online |
| Windows 10 OEM key from an old PC, used on a new PC | Normally no: OEM licences stay with the first device | Buy a Windows 11 key for the new PC |
| Windows 7 or 8.1 key | No longer accepted for new activations | Use a Windows 10 or 11 key |
| Enterprise, Education or volume (KMS/MAK) key | Only within that organisation's licensing | Ask your IT administrator |
Can a Windows 10 product key activate Windows 11?
Yes. A genuine Windows 10 Home or Pro product key is generally accepted by Windows 11 setup and by the Activation page in Settings, and it activates the matching Windows 11 edition. This works because Microsoft offers the upgrade from a genuine Windows 10 licence to Windows 11 at no cost.
Microsoft's own Activate Windows support page lists "upgrading to Windows 11 for free from an eligible device running a genuine copy of Windows 10" as a route to a digital licence. The product key is simply another way of proving that same entitlement.
Two conditions matter more than the key itself. The PC has to meet the Windows 11 hardware requirements, and the Windows 11 edition you install has to match the edition the key was issued for. Microsoft has not published a formal promise that Windows 10 keys will be accepted indefinitely, so treat this as current behaviour rather than a permanent rule.
Which Windows 10 keys work with Windows 11?
Windows 10 Home keys activate Windows 11 Home, Windows 10 Pro keys activate Windows 11 Pro, and the same pattern applies to Pro for Workstations and Education. What decides success is the edition and the licence channel (retail, OEM or volume), not the year printed on the key or the version number of Windows.
| Windows 10 key | Windows 11 edition it activates | Notes |
|---|---|---|
| Windows 10 Home | Windows 11 Home | Will not activate Pro |
| Windows 10 Pro | Windows 11 Pro | A Pro N key activates the matching Pro N edition |
| Windows 10 Pro for Workstations | Windows 11 Pro for Workstations | Rarely sold separately |
| Windows 10 Education / Enterprise | Matching Windows 11 edition | Volume licensing rules apply |
The licence channel still applies after the upgrade. A retail key can move to a new PC, an OEM key stays with the machine it first activated, and volume keys belong to the organisation that bought them. Our guide to OEM, retail and volume licence keys explains those rights in detail.
Do I need a product key if I upgrade from Windows 10?
No. If an activated Windows 10 PC upgrades to Windows 11 through Windows Update or the Installation Assistant, Windows 11 activates automatically with a digital licence linked to that hardware. You are not asked for a key, and you can later reinstall the same edition on that PC without entering one.
Microsoft's support article confirms that with a digital licence "you can reinstall the same edition of Windows 11 on this device without entering a product key". If setup asks for a key during a clean install, choose I don't have a product key and pick the same edition you had before.
Cause and effect: the digital licence is stored against a hardware ID, not inside your installation. Wiping the drive does not remove it, but replacing the motherboard usually breaks the link, which is why an upgraded PC can lose activation after a major repair.
How do I enter a Windows 10 key in Windows 11?
Open Settings > System > Activation, expand Upgrade your edition of Windows, select Change next to Change product key, then type the 25-character Windows 10 key and confirm. Windows contacts Microsoft's activation servers and, if the key is valid for that edition, shows Active within a minute.
- Sign in with an administrator account and make sure the PC is online.
- Go to Settings > System > Activation.
- Select Change product key and enter the key, including the hyphens if you like (they are optional).
- Select Next, then Activate.
- Check that Activation state reads Active.
You can also enter the key on the product key screen during a clean install from a Windows 11 bootable USB. Microsoft notes that setup "selects the correct edition to install based on the product key entered", which saves you choosing the edition manually.
Prefer the command line? Run Command Prompt as administrator and use slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX to install the key, followed by slmgr /ato to activate it, then slmgr /xpr to confirm the activation status.
Will a Windows 10 OEM key work on a new Windows 11 PC?
Normally not. An OEM key that shipped with a laptop or pre-built PC is licensed only for that original device, so it may activate Windows 11 on the same machine but should not move to a new PC. Retail Windows 10 keys can be transferred, provided you stop using them on the old computer.
Most PCs sold with Windows 10 have the OEM key embedded in the firmware. When you install Windows 11 on that same machine, setup reads the firmware key and activates without asking. That is convenient, but it is also why a firmware key will not follow you to a new build.
If you are moving a retail licence, follow our step-by-step guide to transferring a Windows licence to a new PC, which covers linking the licence to your Microsoft account and using the activation troubleshooter.
Why won't my Windows 10 key activate Windows 11?
The most common reasons are an edition mismatch (a Home key on Windows 11 Pro, or the reverse), an OEM key used on different hardware, a key that has already been used on another PC, or a volume key outside its organisation. Hardware changes and network problems cause most of the remaining failures.
- Edition mismatch: Windows reports errors such as 0xC004F050. Our fix for activation error 0xC004F050 walks through checking the installed edition against the key.
- Key already in use: retail keys activate one PC at a time, so remove the old installation first.
- Motherboard replaced: run the activation troubleshooter while signed in with the Microsoft account linked to the licence.
- No connection to activation servers: check the date, time, proxy and firewall settings, then retry.
What we commonly see: buyers who owned Windows 10 Home install Windows 11 Pro from a USB stick because Pro was the default selection, then find their Home key rejected. Reinstalling Home, or buying a Home-to-Pro upgrade, fixes it; no amount of retrying the Home key will activate Pro.
Can I use a Windows 7 or Windows 8 key to activate Windows 11?
No. Microsoft ended the long-running ability to activate new Windows 10 and Windows 11 installations with Windows 7 and Windows 8.x keys in September 2023. PCs that were already upgraded keep their digital licence, but a Windows 7 or 8 key typed into Windows 11 today will not activate it.
If an older PC was upgraded from Windows 7 to Windows 10 years ago, it already holds a digital licence. Reinstalling the same edition of Windows 11 on that same hardware normally activates without any key, as long as the PC meets the Windows 11 requirements.
Does my PC need to meet Windows 11 requirements to use the key?
Yes. A valid key does not change hardware rules: Microsoft's minimum Windows 11 specifications include a compatible 64-bit processor with at least two cores, 4 GB of RAM, 64 GB of storage, UEFI with Secure Boot capability and TPM 2.0. Older PCs that fall short are not supported by Microsoft.
Use the PC Health Check app before buying anything. Our guide to Windows 11 system requirements, TPM 2.0 and Secure Boot shows how to switch on TPM and Secure Boot in firmware, which fixes many "this PC can't run Windows 11" messages on machines from 2018 onwards.
Advanced nuance: activation and support are separate questions. Windows 11 forced onto unsupported hardware may still activate with a valid key, but Microsoft says such devices are not guaranteed to receive updates, so the licence works while the security model does not.
Should I stay on Windows 10 with ESU or move to Windows 11 now?
If your PC meets the Windows 11 requirements, moving now is usually the better choice: the upgrade is free and keeps you on a fully supported system. Consumer Extended Security Updates for Windows 10 now run until 12 October 2027, which suits PCs that cannot run Windows 11 or users who need more time.
On 25 June 2026 Microsoft extended the consumer programme, which you join through Windows Update with a Microsoft account. According to Microsoft's Windows 10 Extended Security Updates page, enrolment is free if you sync your PC settings, or costs 1,000 Microsoft Rewards points or a one-time $30 (US) fee, and one ESU licence covers up to 10 devices.
ESU only provides critical and important security fixes. It adds no features, and it does not change what your Windows 10 key can do. For the wider picture, read Windows 10 end of support: what to do now.
When should I buy a Windows 11 key instead?
Buy a Windows 11 key when you are building or buying a PC without a licence, when your only Windows 10 key is an OEM key tied to another machine, or when you want Pro features but hold a Home licence. In those cases there is no valid Windows 10 entitlement to carry forward.
For a new build, a Windows 11 Pro key gives you BitLocker, Remote Desktop hosting, Hyper-V and Group Policy, and it activates directly during setup. If you already run Windows 11 Home and only want Pro, our guide to upgrading Windows 11 Home to Pro without reinstalling is the quicker route.
Frequently asked questions
Is a Windows 10 licence valid for Windows 11?
Yes, a genuine Windows 10 licence entitles an eligible PC to the matching Windows 11 edition at no extra cost. The licence keeps its original type, so OEM licences remain tied to their device and retail licences remain transferable. The PC must still meet Windows 11 hardware requirements for a supported installation.
Can I clean install Windows 11 with a Windows 10 Pro key?
Yes. Boot from Windows 11 installation media, enter the Windows 10 Pro key on the product key screen, and setup installs and activates Windows 11 Pro. If the PC was previously activated on Windows 10 Pro, you can skip the key entirely and the digital licence activates the installation once the PC is online.
Will Windows 10 keys stop working for Windows 11?
Microsoft has not announced an end date. The upgrade from Windows 10 to Windows 11 remains free, and genuine Windows 10 keys currently activate the matching edition. Microsoft did withdraw Windows 7 and 8 key acceptance in 2023, so policies can change; already activated PCs keep their digital licence regardless.
Does upgrading to Windows 11 use up my Windows 10 key?
Upgrading converts the same licence rather than consuming a second one. The PC simply holds a Windows 11 digital licence instead of a Windows 10 one. If you roll back within the 10-day window, Windows 10 stays activated, and a retail key can later be moved to another PC as one licence.
How do I check which edition my Windows 10 key is for?
Check the original purchase email, box or retailer account, which names the edition. On a working installation, slmgr /dli shows the edition and licence channel of the installed key. If you no longer have the key, Microsoft's guide to finding your product key lists where each type of purchase stores it.
Related guides
- Windows 10 end of support: what it means and what to do
- Transfer a Windows 10 or 11 licence to a new PC
- Windows 11 vs Windows 10: key differences
- Windows 11 Pro: download, install and activate
Links in this guide
| Link | Type | Why it helps |
|---|---|---|
| Activate Windows (Microsoft Support) | External | Confirms that a free Windows 10 to 11 upgrade activates with a digital licence |
| OEM vs retail vs volume licence keys | Internal | Explains which licence types can move between PCs |
| Create a Windows 11 bootable USB | Internal | Builds the installation media used for a clean install |
| Transfer a Windows licence to a new PC | Internal | Steps for moving a retail licence safely |
| Fix activation error 0xC004F050 | Internal | Resolves the edition mismatch error |
| Windows 11 specifications (Microsoft) | External | Official minimum hardware requirements |
| Windows 11 system requirements, TPM and Secure Boot | Internal | How to check and enable TPM 2.0 and Secure Boot |
| Windows 10 Extended Security Updates (Microsoft) | External | Official ESU end date, enrolment options and device limit |
| Windows 10 end of support: what to do | Internal | Options for PCs still running Windows 10 |
| Windows 11 Pro key | Internal | Licence for new builds or PCs without a valid Windows 10 entitlement |
| Upgrade Windows 11 Home to Pro | Internal | Edition upgrade without reinstalling |
| Windows 11 vs Windows 10 | Internal | Compares the two systems before you switch |
| Windows 11 Pro install and activation guide | Internal | Full installation walkthrough |