What Happened to Windows 9?
What happened to Windows 9? Did Microsoft skip over Windows 9 and go right to Windows 10? Well, basically, yes. Here's more on Windows 9.
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What happened to Windows 9?
Microsoft sort of explains what happened to Windows 9 - Neowin
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Ever Wondered What Happened to Windows 9?
The Joy of Tech comic… Windows 9 gets passed over.
What happened to Windows 9? Welcome to Windows 10
What happened to Windows 9?