But some users may get errors like the 0x8007251D error when they try to activate Windows. When Windows can’t connect to the activation server to check your product key, this error happens. There could be a problem with your internet connection or firewall settings, or the activation server could be busy or not responding. You can try a few things to Fix 0x8007251D Windows Activation Error.
First, make sure that your internet connection is stable and that your firewall is not blocking the activation server. You can also try temporarily turning off any antivirus or VPN software that might be getting in the way of activation.
Using the built-in troubleshooter made for this purpose is another great way to fix the 0x8007251D error. If using the troubleshooter doesn’t fix the problem, you can try activating Windows by phone. Follow the steps on the screen to activate Windows over the phone. you can visit Microsoft support center for further help.
Solve: 0x8007251D Windows Activation Error
Run Activation Troubleshooter
- Press the Windows key, and select the Settings (gear) icon.
- Select the Update & Security and thereafter Activation on the left pane.
- Go to the adjacent right pane and hit the Troubleshoot button.
- Doing so will automatically detect and repair the faults that prohibit Windows 10 activation.
Use your original Product Key
- First of all, reach out to the below path on your computer –
Settings (WinKey + I) > Update & Security > Activation
- Head over to the right side and click “Change Product Key“.
- Fill in the 25-digit product key on the subsequent screen and hit Next.
- Windows will look for any issues with the typed-in numbers. And if none is found, your device will activate on its own using the product key entered by you.
Activate Windows using Digital License
It’s possible that you just lost your product key and don’t know how to find it. Having a digital license tied to your Microsoft account helps you reactivate your Windows copy in all of these situations.
There are also users who have never bought one of these keys, but have kept upgrading their PCs since Windows 10 came out. If you are one of these people and you used a personal Microsoft account on the PC at the time, you can easily activate your PC.
- Download/Install the same edition using bootable installation media.
- In case you have already installed the same edition on your computer, just sign out of the current user account.
- When a window prompts you to sign in, use your Microsoft account credentials to log into your official account.
- Wait for some time and your device will activate on its own using the digital license associated with your account.
Adjust the Time and Date
- Right-click on the time section in the taskbar and choose Adjust date and time.
- Turn the toggle on for the Set time automatically option. This will ensure the synchronization of clock with the internet server.
- In case the “Set time automatically” option is already enabled, click on the Sync now button under the “Additional settings” option. This will force synchronization and hopefully, fix the error in the process.
The error 0x80072efd may be caused by an interference of the firewall of the computer or the local network while connecting to the Windows Updates server. It could also be that your PC has lost its internet connectivity, or that the network has limited access.
The System account by default has Full Control permissions to the registry path HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root and any subkeys. If those permissions have been altered for the Root key or any subkey(s), we would see the error code 0x8007000D.
Clean up the Temporary Files. The “setup has failed to validate the product key Windows 10” error can occur when the installation media tool detects the unpacked installer files in the Temp folder. In this case, you can delete the temp files by running the Disk Cleanup tool or a professional cleanup tool.