How to fix Windows activation error 0xC004F009?

Error 0xC004F009 means Windows was never activated before its grace period ran out, so it now runs in the Notifications state. Microsoft lists it as a volume licence (MAK) error. Check which key Windows holds first, then activate it online, offline with an Installation ID, or with your own licence.

Facts checked on 15 October 2026. Steps written for Windows 11 (25H2 and 26H2) and Windows 10 22H2.

What Windows activation error 0xC004F009 means

Microsoft's activation error list for IT staff names it "0xC004F009 The Software Protection Service reported that the grace period expired". The cause it gives is short: the grace period expired before you activated the system, and the system is now in the Notifications state.

In plain words, Windows gives you some time after installation to activate. That time is over and no activation happened. The licence is not refused or blocked. It was simply never activated, which is why activating it now is the main fix.

Why error 0xC004F009 appears, from most to least common

Every cause ends the same way: the clock ran out before activation. What differs is why activation never happened, and that decides your fix.

The reader's question above mentions update services that stopped. Microsoft's error page does not say that Windows Update stops in the Notifications state, and we could not confirm it. Activate first. If updates still fail after that, treat it as a separate problem: Reset Windows Update components

How to fix Windows activation error 0xC004F009

Fix 1 shows the key and its status. Fix 2 activates it online, which ends the error for most people. Fix 3 is for a home PC that holds the wrong key, Fix 4 for a PC that cannot go online, and Fix 5 for work and school PCs. Fix 6 only buys time. System file repair and updates do not activate Windows, so they are left out.

Fix 1. Check the installed key and its status with slmgr /dli

2 minutesNo riskEveryone, before anything else. It takes two minutes and tells you which fix is yours.

Microsoft says slmgr /dli displays the licence information for the installed Windows edition. The channel shows whether a volume key or your own key is in place, and the status shows that activation is still missing.

1. Open Start, type cmd, right-click Command Prompt and select Run as administrator.
2. Select Yes in the User Account Control window.
3. Type slmgr /dli and press Enter.
4. Read the Description line, the Partial Product Key and the License Status in the Windows Script Host box.
5. Select OK to close the box.

slmgr /xpr shows the activation expiration date. Microsoft notes that MAK and retail activation is permanent once it succeeds, so a date there matters mostly on company KMS PCs.

Fix 2. Activate the installed key online with slmgr /ato

5 minutesNo riskThe PC has internet and Fix 1 shows a MAK, retail or OEM key that should be valid.

The grace period expired because no activation happened, so activating ends it. Microsoft says /ato makes Windows try online activation for retail editions and for systems with a MAK installed, and that this needs an elevated Command Prompt.

1. Check that the PC is online: How to check your internet connection in Windows
2. Check the date, time and time zone, because activation fails with a wrong clock: How to fix the date and time in Windows
3. Open Command Prompt as administrator, as in Fix 1.
4. Type slmgr /ato and press Enter, then wait for the Windows Script Host box.
5. Run slmgr /dli again and read the License Status line.

Activate online, then check the result

slmgr /ato
slmgr /dli

Fix 3. Put your own licence back: change the product key or use the troubleshooter

5 to 10 minutesNo riskIt is your own PC, you bought Windows or it came with the PC, and Fix 1 shows a volume key instead of RETAIL or OEM.

Microsoft says /ipk silently replaces a key that is already installed. Your own retail or OEM key then activates against your licence instead of a volume key that was never activated.

1. Open Settings > System > Activation (Windows 10: Settings > Update & Security > Activation).
2. Select Change product key and approve the administrator prompt.
3. Type your 25-character key from the box card, order email or COA sticker, and select Next.
4. Select Activate and wait for the page to update.
5. No key to type because Windows was activated with a digital licence before? Select Troubleshoot on the same page and sign in with your Microsoft account if asked.

From Command Prompt as administrator, the same takes two commands. Microsoft advises a restart after /ipk so the licence service stays stable.

Install your own key, restart, then activate

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

Fix 4. Activate offline with the Installation ID and the Product Activation Portal

15 minutesNo riskThe PC has no internet, or online activation in Fix 2 failed without a new code.

Microsoft's offline route gives Windows a Confirmation ID from its Product Activation Portal, so activation does not depend on the PC reaching the servers itself.

1. Open Command Prompt as administrator, type slmgr /dti and press Enter. Write down the Installation ID from the Windows Script Host box.
2. On any device with internet, open the Product Activation Portal at aka.ms/WindowsActivate, pass the Captcha and sign in.
3. Select Activate a Microsoft Product > Windows and your version, enter the Installation ID and select Submit.
4. Back on the PC, type slmgr /atp followed by the Confirmation ID, without hyphens or spaces, and press Enter.
5. Type slmgr /dli and press Enter to check the status.

Offline activation in Command Prompt as administrator

slmgr /dti
slmgr /atp <ConfirmationID>
slmgr /dli

Fix 5. Work or school PC: ask the IT team or the Microsoft Licensing Activation Centers

5 minutes, plus the replyNo riskThe PC belongs to an employer or school, or you manage the organisation's volume licence.

Microsoft's only advice on its 0xC004F009 entry is to contact the Microsoft Licensing Activation Centers. The volume key belongs to the organisation, so its licensing contact makes that request.

1. Run slmgr /dli (Fix 1) and note the Description line and the Partial Product Key.
2. Take a screenshot of the Activation page with the code 0xC004F009.
3. Send both to your IT team or helpdesk, with the PC name from Settings > System > About.
4. IT admins: run slmgr /ato on the PC while it is on the company network, and if it still fails, contact the Microsoft Licensing Activation Centers with the agreement details.

Fix 6. Reset the activation timers with slmgr /rearm to gain time

5 minutesLow riskYou will activate later, for example when back on the company network, and need the error gone for now.

Microsoft says /rearm resets the activation timers. That starts the grace period again, but it does not activate Windows, so the error comes back when the new period ends.

1. Open Command Prompt as administrator, as in Fix 1.
2. Type slmgr /rearm and press Enter.
3. Restart the PC when the Windows Script Host box asks you to.
4. Activate with Fix 2, 4 or 5 before the new grace period ends.

If error 0xC004F009 is still there

If no fix worked, the question is whose key is in Windows and whether it can still be activated. Collect these facts before you contact your IT team or Microsoft.

With a genuine retail purchase, Microsoft's Product Activation Portal offers support options when activation fails. Have the order details, the slmgr /dli output and a screenshot of the error ready.

How to avoid error 0xC004F009 next time

The error only appears when activation is put off until the grace period runs out. Activate on the day you install.

Frequently asked questions

What does error code 0xC004F009 mean?

It means the grace period for activation expired before Windows was activated. Microsoft's wording is "The Software Protection Service reported that the grace period expired." It adds that the system is now in the Notifications state. Nothing on the PC is broken. The key was simply never activated, so activating it with slmgr /ato or offline is the fix.

How do I fix 0xC004F009 on Windows 7?

The same commands work on Windows 7. Open Command Prompt as administrator and run slmgr.vbs /dli to see the key, then slmgr.vbs /ato to activate online. Offline, Microsoft's Windows 7 steps use slmgr.vbs /dti for the Installation ID and the Product Activation Portal. Windows 7 support ended on 14 January 2020, so it gets no security updates even when activated.

Why does the message say Software Licensing Service on my PC?

That is the older name of the same service. Windows 7 shows "The Software Licensing Service reported that the grace period expired", while Microsoft's current list says Software Protection Service. The code 0xC004F009 and the fixes on this page are the same for both wordings. Only the service name in the text changed between versions.

Is 0xC004F009 a MAK error?

Microsoft's activation error list marks 0xC004F009 with the activation type MAK, the volume key organisations buy. That is why Microsoft sends it to the Licensing Activation Centers. On a home PC, run slmgr /dli. If the channel says VOLUME_MAK and you bought Windows yourself, replace the key with your own as in Fix 3.

Does slmgr /rearm fix 0xC004F009 for good?

No. Microsoft says /rearm resets the activation timers, so a new grace period starts and the error goes away for a while. It does not activate Windows. When the new period ends, the error returns. Use it only to gain time, then activate with Fix 2, 4 or 5. Rearm has its own limits too.

Can a default or generic product key fix this error?

Not on a home PC. The default keys published by Microsoft are generic volume license keys (GVLK). Microsoft says that with a GVLK installed, /ato only tries to activate against a KMS server, which a home network does not have. Older guides that promised temporary activation this way were wrong. Use the key you bought or your digital licence.

Will phone activation with SLUI 4 still work?

It depends on the build. Microsoft says SLUI may no longer be available on Windows 11 builds 26200.7922 and newer, and newer builds show the Installation ID under Automated Help on the Activation page. Microsoft also says not to call the phone number shown, but to use the Product Activation Portal. slmgr /dti and slmgr /atp work on every version.

My Windows updates stopped after this error. Are they related?

We could not confirm that. Microsoft's description of 0xC004F009 says only that the system is in the Notifications state, not that Windows Update stops. Activate Windows first with Fix 2. If updates still fail afterwards, reset the Windows Update components, which is a separate problem with its own fixes. Step by step: Reset Windows Update components

I searched in another language how to activate Windows 7 for free. Can this page help?

This page is about the activation error 0xC004F009, and it does not cover free activation. Windows 7 activates only with a genuine key. Activator tools change system files and run with full rights, so we do not link to them. If your search was simply "how do I solve this problem" in your own language, the short answer at the top and Fix 1 and Fix 2 are the place to start.