@ibrahim isak
Hi,
Which version of you Windows 10? What's the detailed error message? Did you got the error code?
If you're having trouble activating Windows 10, follow the steps mentioned in the following link to fix activation errors:
https://support.microsoft.com/en-us/windows/get-help-with-windows-activation-errors-09d8fb64-6768-4815-0c30-159fa7d89d85
Hope above information can help you.
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