Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Pirouz,
Based on the timing and symptoms, your issue may be related to the recent KB5002907 update.
This update affected some Office 2016 and Office 2019 installations, causing Office to appear unlicensed or, in some cases, to be removed.
Please be aware that support for Office 2016 ended on October* 14, *2025. An existing installation may continue to function, but Microsoft no longer provides regular technical support, security updates, or bug fixes for this version. Continuing to use an unsupported version may therefore present security, reliability, and compatibility risks.
Your documents and archives are likely still stored on the computer. The read-only behavior occurs because Office is no longer activated.
Since the license does not appear in your Microsoft account and HP cannot retrieve the original product key, I recommend contacting Microsoft Support and providing the HP invoice, Pack ID, and Delivery Certificate number as proof of purchase. Support can review the licensing information and advise whether your Office 2016 entitlement can be restored.
You can contact Microsoft Support here:
Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas.
- Open a website link - Contact - Microsoft Support
- In the box below "We're here to help", type Microsoft 365, click "Get Help", and then click "Contact Support" below.
- In this section, you will need to sign in to your Microsoft account.
- Select "Microsoft 365 and Office" under Products & Services, select "Technical Support" as the category, and click to confirm
- You can select " Chat with a support agent in your web browser " to access the chat window.
I hope you can get the support you need, have a nice day.