Windows 10: KB5003173 appears to have broken Windows 10 Activation and Office 2019 licensing

Last Friday my Widows 10 computer applied KB5003173 and rebooted.Today I noticed that Office products keep crashing, then I saw that they say "Unlicensed Product"While I was attempting to resolve that issue I noticed that Windows 10 has an "Activate Windows" message in the lower right-hand portion of the screenI have valid Product Ke

:)

 

Office 2019

Only supported on Win10. Sorry, 8.1 users, only 4 years old, gotta go.

Microsoft Office 2019 will only work on Windows 10

https://blogs.technet.microsoft.com...-to-office-and-windows-servicing-and-support/

Spoiler Office 2019
Last year at Ignite, we announced Office 2019 – the next perpetual version of Office that includes apps (including Word, Excel, PowerPoint, and Outlook, and Skype for Business) and servers (including Exchange, SharePoint, and Skype for Business). Today we’re pleased to share the following updates:

• Office 2019 will ship in H2 of 2018. Previews of the new apps and servers will start shipping in the second quarter of 2018.
• Office 2019 apps will be supported on:
  • Any supported Windows 10 SAC release
  • Windows 10 Enterprise LTSC 2018
  • The next LTSC release of Windows Server
• The Office 2019 client apps will be released with Click-to-Run installation technology only. We will not provide MSI as a deployment methodology for Office 2019 clients. We will continue to provide MSI for Office Server products.

 

Microsoft Office 2019 Will Run on Windows 10, and Only Windows 10

As reported yesterday, Microsoft changed the way how they license Windows 10 to their OEM partners. But buckle in folks, the changes just keep on coming. In what looks like an effort to push Windows 7 and Windows 8.1 owners to upgrade, Microsoft has officially announced that Office 2019 will only work on machines with Windows 10 and the next LTSC release of Windows Server. That's only the tip of the iceberg though. Unlike previous version of Office that came with 10 years of support, Office 2019's support lifecycle is shortened to five years of mainstream support and two years of extended support. Additionally, the client applications are only available with a Click-to-Run installer. However, Microsoft will continue to provide a MSI installer for the server applications.

 

Microsoft Office 2019 Will Run on Windows 10, and Only Windows 10

Office 2016 is supported on all current O/S's until 2025. So, 7 years is plenty of time to phase out all of their previous O/S's. I doubt there would ever be much need to run Office 2019 on a non-Windows 10 computer.