There are two versions of MyKeyFinder: free and paid-for. Both will find Windows and Microsoft Office product keys but the Plus edition will also scan external hard drives and find Wi-Fi passwords.

LibreOffice offers a free, open-source alternative to Microsoft Office ... a clean layout similar to Office 365, requiring simple registration for a product key. OnlyOffice integrates all features ...

However, your actual documents, files, and product keys remain unaffected ... Till then, you can try using some Microsoft ...