Product key of windows 10 pro

[Zarif1]

I forget windows 10 pro  product key.  I don't have any copy of product key.  I reinstall windows 10 pro ( clean installation) . Now I can't active operating system. How can I find product key?

[iomare]

Hi,

You do not need product key to activate Windows 10. If you install the same version (home or pro) which was already on the PC it will automatically activate once installed and connected to internet. During installation if prompted click on "do not have product key". It might take a little time to activate however if you go into settings and go to security and update click on the tab on the left activation and click on activate now.

Let me know if there is any problems.

Hope it helps,

David

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[Zarif1]

Error code: 0x803F7001

[iomare]

OK.

Go to this link to contact Microsft:

https://support.microsoft.com/en-us/contactus/

Click on get started

Type activation

click on Windows

Click on Windows 10

Click on activation after reinstall

When asked if solved problem click on no

Click on talk to real person

Now explain that you reinstalled Windows and it is giving error code 0x803F7001 when trying to activate

They will solve the problem for you.

Let me know,

David

[Zarif1]

I talked to microsoft's live agent.He tried to solve problem by remote accessing.
He suggested to take help from manufacturer company.