The U.S. Internal Revenue Service admitted this week it will have to pay "millions" to Microsoft in order to continue support of its many PCs that are still running Windows XP after its cut-off date.
A week of Windows 10, holograms and Exploding Kittens on Mars
Office 2016 launching this year, touch apps coming soon
Microsoft reveals the next version of Windows 10
Introducing Windows 10 for phones
Hands on with HoloLens
Download: Windows 10 build 9926