.

Keeping this in view, is it really necessary to update Windows?

Microsoft routinely patches newly discovered holes, adds malware definitions to its Windows Defender and Security Essentials utilities, bolsters Office security, and so on. In other words, yes, it's absolutely necessary to update Windows. But it's not necessary for Windows to nag you about it every time.

Beside above, how do you install optional updates? How to install optional updates using Settings

1. Open Settings.
2. Click on Update & Security.
3. Click on Windows Update.
4. Click the View optional update link.
5. Expand the update category, such as the Driver updates section.
6. Check the optional update that you want to configure.
7. Click the Download and install button.

Herein, how can you download and install optional Windows updates?

How to Install Optional Updates in Windows 8.1

1. In the System window, select Windows Update in the lower-left corner. Windows Update appears on the desktop.
2. Three optional updates are available.
3. If you see a link indicating that you have optional updates available, select that link.
4. Select the check box next to any or all updates you want to install.

Can I skip Windows updates?

No, you can't, since whenever you see this screen, Windows is in the process of replacing old files with new versions and/out converting data files. If you'd be able to cancel or skip the process (or turn off your PC) you could end up with a mix of old and new that won't work properly.