Microsoft wants everyone to update to Windows 10 to take advantage of its regular update cycle. But for those on an older version of Windows, what happens if you don’t upgrade to Windows 10? Your current system will keep working for now but may run into problems over time. Let’s take a look at what happens if you don’t upgrade to Windows 10 so you can make a plan. In case you’re not sure, WhatIsMyBrowser will tell you which version of Windows you’re on. If You’ve Updated to Windows 10 Already If you’re on Windows 10, congratulations!