Because Office 2010 is no longer updated, it is vulnerable to modern security threats. For a more secure and updated experience, Microsoft recommends moving to Microsoft 365 or Office 2021 . If you'd like, I can help you: if you've lost it Explore free alternatives like LibreOffice or Google Docs Understand the benefits of upgrading to a newer version Office 2010 reactivation - Microsoft Q&A
Choose your country/region to see the relevant phone number. microsoft-office-2010-product-key-activation-methods-2023
: Ensure you aren't using a Windows product key (found on a PC sticker) for Office, as they are not interchangeable. Because Office 2010 is no longer updated, it