we cant activate windows on this device .error code 0x80072EE7

Run the Windows Activation troubleshooter first, then clear the DNS cache and test activation on another network because error 0x80072EE7 indicates that the device cannot reach or resolve Microsoft’s activation service.

1. Run the Activation troubleshooter

1. Sign in with an administrator account.
2. Open Settings → System → Activation.
3. Select Troubleshoot beside the activation error.
4. Apply any recommended correction, then check whether Activation state changes to Active.

The Troubleshoot option is available only while Windows is not activated and requires administrator rights.^1^

If the error changes after troubleshooting, use the new error code for the next action; Microsoft notes that activation errors can change after diagnostics.^2^

2. Correct the DNS/network path

1. Disconnect any VPN or proxy temporarily.
2. Connect through a different network if available—for example, a mobile hotspot. This helps distinguish a PC problem from a router or ISP DNS problem.
3. Open Start, type Command Prompt, right-click it, and select Run as administrator.
4. Run:

ipconfig /flushdns

5. Restart the computer and return to Settings → System → Activation.

The exact activation error has been associated with DNS, VPN, firewall, security-software, or unstable-connection problems.^3^

Avoid disabling Windows Security or the Windows Firewall. If third-party security software must be tested, pause only its web/network filtering briefly, do not browse or download files during that test, and re-enable it immediately afterward.

3. Verify the license matches the installed edition

The screenshot shows Windows 11 Home Single Language. A product key or digital license must match that edition. Windows activation requires either a digital license or a valid 25-character product key appropriate to the installed edition.^4^

Do not enter generic or newly purchased keys merely to test connectivity. If Windows previously activated with a digital license, sign in with the Microsoft account associated with that license and rerun Troubleshoot.

If the troubleshooter reports a license for another edition, follow its edition-specific recommendation rather than reinstalling immediately.

4. Use offline activation if online activation continues to fail

Your Activation page already displays Activate by phone:

1. Select Settings → System → Activation → Activate by phone.
2. Choose your country or region and continue until Windows displays the Installation ID.
3. Open Microsoft’s Product Activation Portal on another connected device.
4. Select Activate a Microsoft Product → Windows → Windows 11.
5. Submit the Installation ID to receive a Confirmation ID.
6. Return to the PC, select Enter Confirmation ID, enter it, and select Activate Windows.

Microsoft recommends the portal rather than calling a displayed activation telephone number. Offline activation is the supported fallback when online activation does not complete.^5^

If the portal rejects the license, use Open Get Help on the Activation page to contact Microsoft Support. If the PC was refurbished and no valid license was supplied, the refurbisher is responsible for providing the product key; for other retailer-supplied licenses, contact the seller or authorized retailer.

References

1. Using the Windows Activation troubleshooter | Microsoft Support
2. Get help with Windows activation errors | Microsoft Support
3. Cannot find windows key - Microsoft Q&A
4. Activate Windows | Microsoft Support
5. Activate Windows: Online activation, or Offline activation using your ...