Quick fix: Open Command Prompt (Admin). Run: slmgr /ato to manually activate. Or slmgr /upk to remove current key, then slmgr /ipk [your-key] to install fresh key, then slmgr /ato. For digital license: slmgr /dli to view current state; if a digital license exists, ensure correct Microsoft account is signed in.

Windows 11 asks for activation despite having a valid license. Cause: digital license/key not properly registered, hardware change broke license link, or Microsoft account mismatch. The slmgr commands re-register and activate.

Symptom: Windows 11 keeps asking to activate even with genuine license.
Affects: Windows 11.
Fix time: ~10 minutes.

What causes this

Windows 11 activation uses: OEM key (in firmware), digital license (linked to Microsoft account), or retail key (entered manually). Activation issues:

Digital license not synced after Microsoft account sign-in.
Hardware change (motherboard, CPU) reset the digital license link.
Reactivation servers temporarily unreachable.
Slow activation rollout after reinstall.
License expired (rare for normal users).

Method 1: Check status and manually activate

The standard route.

Open Command Prompt as Admin.
Check current status:
```
slmgr /xpr
```
Shows: “Windows is activated permanently” (if activated) or “Notification mode” (if inactive).
For detailed info:
```
slmgr /dli
slmgr /dlv
```
Shows license details, edition, channel.
Manually try activation:
```
slmgr /ato
```
Forces activation. May succeed or report error code (look up code at Microsoft support).
For activation server timeout: wait a few minutes, retry. Microsoft activation servers occasionally lag.
If success message: Windows activated. Restart and verify.

This is the standard fix.

Method 2: Re-link Microsoft account digital license

For digital license issues.

Open Settings → System → Activation.
Click Add an account (or sign in to your Microsoft account if local).
Sign in with the Microsoft account that holds the Windows license.
Activation troubleshooter: click Troubleshoot.
Pick I changed hardware on this device recently if applicable.
Walk through wizard. Pick the Windows install on the list (Microsoft remembers your linked devices).
Click Activate. May require login confirmation.
For hardware change: Microsoft activates if hardware change is within tolerance. Major hardware change (new motherboard, new CPU) may require contacting support to transfer.
For account mismatch: ensure same account that originally activated.

This is the digital license route.

Method 3: Reset and reinstall key

For corrupted key state.

Get current product key (for reference):
```
wmic path softwarelicensingservice get OA3xOriginalProductKey
```
For OEM firmware key. Save in case.
For retail key: have your key on hand.
Remove current installed key:
```
slmgr /upk
```
Clear product key from registry:
```
slmgr /cpky
```
Install new key:
```
slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
```
Replace X with actual key.
Activate:
```
slmgr /ato
```
Verify: slmgr /xpr. Should show permanent activation.
Reboot.

This is the key reinstall.

How to verify the fix worked

Settings → System → Activation shows: Windows is activated with a digital license or … linked to your Microsoft account.
slmgr /xpr shows permanent.
No more activation pop-ups or watermark.
System restrictions (no personalization) gone.

If none of these work

If still asks to activate: Hardware change beyond tolerance: contact Microsoft support: 1-800-642-7676 or chat at support.microsoft.com. Activation tech can help reset. For OEM PCs sold without proper firmware key: rare; OEM may have miscoded. Contact OEM. For self-built PCs: retail key required; OEM key violates terms. For pirated keys: won’t work. Buy legitimate. For Windows 11 specific to Insider Channel: Insider builds need active Insider enrollment. Settings → Windows Insider Program. For volume license PCs (corporate): KMS server unreachable. Contact IT. For specific .ato errors (0xC004F074, etc.): look up code at support.microsoft.com. Each has specific fix. Last resort: clean install and re-activate: Reset This PC → Cloud download. Sign in with same Microsoft account — digital license re-applies.

Bottom line: slmgr /ato to force activation. Use Settings → Activation → Troubleshoot for hardware changes. Re-link Microsoft account for digital license. slmgr /upk + slmgr /ipk + slmgr /ato for key reinstall.