How to Activate Windows 11: Product Key and Digital License

Short version of how to activate Windows 11: Settings, System, Activation, then Change product key. Type the 25 characters and you’re done. A PC that already carries a digital license doesn’t even need that. It activates by itself the first time it goes online.

Real life is messier. A new motherboard, a wrong edition, a key that won’t take. So I’ll go through both routes, the commands, and the error codes we see most in chat.

How to activate Windows 11 with a product key

Two minutes, if the key matches the edition. You need an administrator account and an internet connection.

1. Open Settings. Win + I is the quick way.
2. Go to System, then Activation.
3. Find the line Change product key and press Change.
4. Type the 25 characters. The dashes fill in by themselves.
5. Press Next, then Activate.
6. Wait for the line “Windows is activated”. It usually shows within a minute.

Prefer a shortcut? Press Win + R and paste this. It opens the Activation page directly.

ms-settings:activation

One thing before you type. The key has to match the edition that’s installed. A Pro key on a Home install switches the PC to Pro after a restart. A Home key on a Pro install won’t activate it. Not sure which edition you have? Settings, System, About, and read the Edition line.

Product key or digital license

Two ways a PC proves it’s paid for. Microsoft’s wording, shortened: a product key is the 25-character code, and a digital license activates the PC without one.

Which one do you have? The Activation page tells you. Open it and read the exact wording of the status line.

Microsoft Helps has a short video on licenses and activation. Under three minutes, and worth it before a reinstall.

Linking the license to your Microsoft account

Do this before you ever swap a motherboard. It takes a minute, and it’s the step people wish they’d done.

1. Sign in to the PC as an administrator.
2. Settings, Accounts, Your info. The administrator account has to be a Microsoft one.
3. Go back to Settings, System, Activation.
4. Press Add an account and sign in.

The status line then ends with “linked to your Microsoft account”. That’s the one you want to see.

Entering the key during a clean install

Setup asks for the key early. Two choices on that screen.

Reinstalling on a PC with a digital license? Skip the key and pick the same edition as before. Pick the wrong one and it won’t activate. Our Windows 11 new PC setup guide walks through the whole install.

The Activation troubleshooter

It only shows up when the PC isn’t activated. You’ll find it on the Activation page, under Troubleshoot, and you need an administrator account to run it.

The hardware one matters most. After a new motherboard it goes like this:

• Choose “I changed hardware on this device recently”.
• Sign in with the linked Microsoft account.
• Tick “This is the device I’m using right now”.
• Press Activate.

It needs the same account and the same edition as before. Moving the license to a different computer is another job, covered in how to transfer a Windows license to a new PC.

Commands that do the same job

For a PC with a broken Settings app. Or for twenty PCs. Open Terminal or Command Prompt as administrator first.

Three lines. The first installs the key, the second activates online, the third shows what you’ve got.

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

A healthy retail install answers the last command with License Status: Licensed and a RETAIL channel line. Anything else, and I’d read the error code before trying again.

No internet on that PC

Phone activation has changed. The PC may still show a phone number, and Microsoft now says not to call it. The Product Activation Portal replaced the call.

1. On the offline PC, open Settings, System, Activation and choose Automated Help. Recent Windows 11 builds show the Installation ID there.
2. On any device with internet, open the Product Activation Portal and sign in.
3. Choose Activate a Microsoft Product, then Windows, then Windows 11.
4. Type the Installation ID. The portal returns a Confirmation ID.
5. Back on the PC, choose Enter Confirmation ID and type it in.

No Automated Help button on your build? Then the Installation ID comes from one command, and the Confirmation ID goes in with a second.

slmgr /dti
slmgr /atp CONFIRMATION-ID

The old phone activation window may not open at all on current builds. Microsoft points to Automated Help or the commands.

What an unactivated PC looks like

Windows 11 keeps running without activation. Microsoft’s license terms mention reminders to obtain a proper license, and some updates and services may be offered only to genuine installs.

What we see on unactivated PCs in practice: the watermark in the corner, and Personalization settings greyed out. No wallpaper change, no colours, no themes. The watermark guide covers that corner of the screen.

Error codes after you press Activate

Something else on screen? The Windows 11 activation errors list has every code we’ve written up.

Mistakes we see most

That last one fills the search results for this topic. A script that fakes activation leaves you with an unlicensed PC and somebody else’s code running as administrator. I’d rather pay for a key.

Need a key first

Need a key that actually sticks? Ours is Windows 11 Pro, emailed the second you pay. There’s Windows 11 Home too, if Pro is more than you need.

Not sure which? Windows 11 Home vs Pro compares the two. We’re a trusted reseller with genuine keys, and every one activates on Microsoft’s own servers. The other editions sit in the Windows 11 keys section.

Where these steps apply

Windows 11 Home and Pro, current builds. The names of the buttons come from Microsoft’s support pages as they read in November 2026. Still on the older system? The path differs there, and our Windows 10 activation guide has it.

Sources I checked the steps against:

• Microsoft Support: Activate Windows
• Microsoft Support: Using the Windows Activation troubleshooter
• Microsoft Learn: Slmgr.vbs options

Words on this page