Windows 8.1 Windows 8.1 Update 3

[kemical]

Whilst the August roll-up update was formally called Windows 8.1 Update 2 this November roll-up could be considered Update 3 and are basically like mini service packs. It should be available via Windows update but the standalone is also available from the links below:

The November 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 resolves issues, and includes performance and reliability improvements. We recommend that you apply this update rollup as part of your regular maintenance routines. Check out the fixed issues in this update. Also notice that there is a prerequisite and a restart requirement for installing this update.

This update includes the following:

New features and improvements
This update rollup includes the following new features and improvements:

• Refreshed language packs
• Defence-in-depth security and Schannel hardening
• Support for newer hardware (boot order allowance, SD card improvements, USB debugging)
• Improved Web Services for Devices (WSD) printer support during network switches
• Performance and reliability improvements in clustered virtual machine mission-critical environments
• Improved manageability
• Additional hardware support (devices that have third-party disk encryption software enabled can now be upgraded to Windows 8.1 more easily)

Just in case you have any issues:

Known issue with this update

• You receive a 0x800f0922 or 0x80070005 error message when you try to install this update

Symptoms
Assume that you have either of the following configurations:

• You have a Windows Server 2012 R2 server that is running on hardware that has UEFI that has Secure Boot enabled.
• You have a Windows Server 2012 R2-based Hyper-V host that is running, and you are running a Generation 2 virtual machine guest that uses UEFI firmware support and that has the Secure Boot option enabled. Additionally, the guest virtual machine is running Windows Server 2012 R2.

In these configurations, update 3000850 may not be installed, and you receive a 0x800f0922 or 0x80070005 error message.

Solution
To resolve this issue, follow these steps:

1. Install the updated servicing stack update 2975061, and then restart the computer.
2. Try to reinstall this update.

Ref and download:
https://support.microsoft.com/kb/3000850