Windows 8 didn't turn out to be the success Microsoft was hoping for.
It boasted a bold new Metro user interface (since renamed to Modern UI) which didn't sit well with the users.
Actually Windows Threshold is the codename of Windows 10 just like Longhorn was the codename of Windows Vista and Whistler was the codename of Windows XP.Unless you've been living under a rock for last few months, you're likely aware of the imminent release of Windows 10.Microsoft's latest desktop operating system will become available for upgrade/ purchase starting July 29.Update: it appears the simplest fix for the unable to log in will be to boot to recovery options and uninstall the offending KB3097877 by using a command line instruction ( If your computer’s system is severely damaged and you can’t access the System Recovery Options menu on your computer, you can access it using the Windows 7 installation disc or a USB flash drive, or using a system repair disc if you created one earlier.To use this method, you need to restart (boot) your computer using the disc or USB flash drive.Windows 10 comes with an improved Start Menu which can be converted into a full screen Start Menu which works quite similar to the previous Start Screen.Windows 10 provides users a choice to choose between Start Menu or Start Screen as mentioned in following tutorial: In Windows 10, modern apps run in windowed mode on Desktop similar to other software programs such as Microsoft Office, etc.This can happen on Windows 7, 8, or 10, but it’s become especially common with Windows 7.Sometimes updates will error out, or sometimes Windows Update may just get stuck “searching for updates” forever. Windows includes a built-in troubleshooter that may be able to help fix a stuck update.With Windows 10, Microsoft is undoing several of the things that didn't work in Windows 8, while also adding some amazing new features and security capabilities. Formerly exclusively available on Windows Phone, Cortana is Microsoft's voice-based virtual assistant.Much like real life assistants, it will help you with your day-to-day activities.