This message can appear whether you have a genuine Office license or not. Many users have recently complained about receiving the Product Activation Failed message at the top of the title bar when they open an Office application like Word, Excel or PowerPoint. The current version of Office is Office 2021, released in October 2021, along with Windows 11. Even though pretenders to the Office throne have sprung up in recent times, it remains a fact that no other application bundle comes close to the ease, sheer versatility and plain old familiarity we get with Microsoft Office. You might as well say it is in a league of its own when it comes to the ultimate package for creating, managing and forwarding documents in any common format. For those who routinely use text documents, spreadsheets or presentation slides at work or study, Microsoft Office is nigh on indispensable.