Windows 11 OS which came pre-installed got deactivated after Windows update

Greetings!

My HP laptop came pre-installed with Windows 11. But after 2026-06 Preview Update (KB5095093) (26200.8737) installed on 10th July 2026, Windows OS got deactivated. And I don't have a product key, since the OS came pre-installed. Can anyone help me with this issue?

Regards

Kamal