This is the answer of slmgr /dlv:
Always the same error.
How to fix Windows activate error
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Sandu Marian
0
Reputation points
My Windows 7 worked for 10 years, and now I receive the message "This copy of Windows is not genuine".
Windows for home | Other | Licensing and activation
2 answers
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Sandu Marian 0 Reputation points
2026-10-19T08:45:52.02+00:00 -
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Ian-T 16,365 Reputation points Microsoft External Staff Moderator2026-10-19T23:19:39.6866667+00:00 Please note that our forum is a public platform, and we will modify your question to hide personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.
Thank you for the screenshot. The result confirms that the OEM licensing information required for activation is missing from the BIOS. Unfortunately, this cannot be repaired through normal Windows activation troubleshooting.
Your remaining options are to contact the computer manufacturer, activate using the genuine product key printed on the PC’s Windows 7 sticker if one is available, or install a supported version of Windows with a valid license. Since Windows 7 is no longer supported, upgrading would be the safest long-term option. Please note that this is a user-to-user support forum. Moderators and contributors cannot access accounts or Microsoft’s back-end systems. We can only provide technical guidance on reported incidents, requests and ideas
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Sandu Marian 0 Reputation points
2026-10-20T09:07:42.36+00:00 Thank you very much for your kindness. I also instaled W10 on my PC, but I don”t want to give up W7, on which I have many useful programs, and consider it the best Windows of all.
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Ian-T 16,365 Reputation points Microsoft External Staff Moderator
2026-10-20T23:20:39.4233333+00:00 I understand since I also really like Windows 7 just like you. But due to it not being supported anymore - security and updates are not there as well.
Windows 10 on your device is a better choice for now I believe.
Thank you for your kind response and I hope you have a lovely day
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Ian-T 16,365 Reputation points Microsoft External Staff Moderator
2026-10-17T23:55:11.3733333+00:00 Since Windows was activated for many years, the next step is to identify why validation is now failing. This can happen after hardware or repair changes, damaged licensing files, or when the installed Windows edition or product key no longer matches the original license.
Open Command Prompt as administrator, run slmgr /dlv, and share the error code and license status shown. Please hide the product key and Product ID from any screenshot.
You can then follow Microsoft’s Windows activation instructions to retry online or offline activation.
Keep in mind that Windows 7 support ended on January 14, 2020, so moving to a supported version of Windows is recommended.
Hope this helps. Have a nice day
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Ian-T 16,365 Reputation points Microsoft External Staff Moderator
2026-10-18T23:29:12.6066667+00:00 Hi Sandu
Just checking in to see if my answer's helpful, please feel free to let me know if you need any further assistance
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