Windows Activation Error 0xC004F012: How to Fix It

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What does error 0xC004F012 mean?

The Software Protection service (sppsvc) stores your license information in a file called tokens.dat. When Windows asks that store for a value it needs and the value isn’t there, you get “the value for the input key was not found”: error 0xC004F012.

You usually see it in one of these situations:

• After a major upgrade or reset. A feature update, an in-place repair or an upgrade from Windows 10 to 11 can leave the license store incomplete.
• A damaged license store. A disk error, a cleanup tool or a crash during an update can corrupt tokens.dat.
• No usable key on the PC. The key was removed, or the key installed doesn’t match the edition.
• A digital license on another account. In Settings you may also see “Make sure you’re signed in with the same account linked to the digital license”.

Before you start, open Settings → System → About and check your Edition. A Pro key only activates Windows Pro, and a Home key only activates Windows Home. If they don’t match, see our guide to error 0xC004F050.

Fix 1: Run the Activation troubleshooter

1. Make sure you’re connected to the internet.
2. Go to Settings → System → Activation (on Windows 10: Settings → Update & Security → Activation).
3. Click Troubleshoot and follow the steps. If you changed hardware recently, choose I changed hardware on this device recently and sign in with the Microsoft account linked to your license.

The troubleshooter only appears when Windows isn’t activated. If it doesn’t fix the error, go to Fix 2.

Fix 2: Enter your key again

In Settings: go to Settings → System → Activation, click Change product key, enter your 25-character key and click Next, then Activate.

Or in Command Prompt: click Start, type cmd, right-click Command Prompt and choose Run as administrator. Then run:

1. Install your key: slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
2. Activate online: slmgr /ato
3. Check the result: slmgr /xpr should say The machine is permanently activated.

If /ipk or /ato gives 0xC004F012 again, the license store itself needs rebuilding (Fix 3). New to these commands? Our guide to activating Windows with CMD explains each one.

Fix 3: Rebuild the license store (tokens.dat)

This is Microsoft’s own procedure for activation problems caused by a damaged license store. It doesn’t touch your files or apps, but it does reset activation, so have your product key ready before you start.

1. Open Command Prompt as administrator.
2. Stop the Software Protection service: net stop sppsvc
3. Go to the license store folder: cd %windir%\system32\spp\store\2.0
4. Rename the old store (don’t delete it): ren tokens.dat tokens.bar
5. Start the service again: net start sppsvc
6. Reinstall the system license files: cscript.exe %windir%\system32\slmgr.vbs /rilc. This takes a minute or two; click OK on any pop-ups.
7. Restart the PC twice.
8. Open Command Prompt as administrator again and install your key: slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX, then slmgr /ato.

Keep tokens.bar until Windows shows as activated. Microsoft also advises against using slmgr /upk here: to replace a key, use /ipk.

If net start sppsvc fails (for example with “Access is denied” or error 5), run sfc /scannow in the same window, restart, and try again.

Fix 4: Activate by phone

If online activation still fails, Windows can activate by phone with Microsoft’s automated system:

1. Press Windows + R, type slui 4 and press Enter.
2. Choose your country or region and click Next.
3. Call the number shown, enter the installation ID when asked, and type the confirmation ID you get back into the window. Then click Activate.

If slui 4 doesn’t open, run it from Command Prompt as administrator. Still stuck? Email us at support@krbkeys.com with a screenshot of the error.

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