New features and improvements
- Refreshed language packs
- Defense-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)
Known issues in this update
- You receive a 0x800f0922 or 0x80070005 error message when you try to install this update
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.
To resolve this problem, follow these steps:
- Install the updated servicing stack update 2975061, and then restart the computer.
- Try to reinstall this update.
- The computer may crash if you restore the system to a restore point that was created before update rollup 3000850 was installed
- This problem applies only to Windows 8.1 editions.
- An installation of a Windows update typically creates a restore point to which the system can be rolled back in case the installation or the updates cause any problems. In this case, the computer may experience startup failures if you try to roll back the system to a restore point that was created before you installed update rollup 3000850.
- If the computer has Windows Recovery Environment (WRE) configured, the system automatically restores itself to the last-known working state.
To work around this problem, use the Programs and Features item in Control Panel instead of System Restore. To do this, click View installed updates in the navigation panel in Programs and Features, select KB3000850 in the list, and then click Uninstall.
- After you apply this update on a computer, the computer does not respond during shutdown if you have enabled Fast Startup.
If you do not encounter the issue but have enabled Fast Startup, install hotfix 3042085 before you apply the November 2014 update.
If you have encountered the issue, to work around this issue, restart your computer.
- After you install security update 2992611 or update 3000850, domain users who log on to domain-joined Windows 8.1 computers experience the following issues:
- Adding new account in Windows Live Mail 2012 fails with error 0x80090345.
- Saving RDP passwords fails with no apparent error.
- Opening Credential Manager fails with error 0x80090345.
- Explorer hangs when encrypting a file. A WPA trace contains the following signature:
Explorer taking ~664 seconds to Encrypt a file. TID #3376.
This is being serviced by LSASS TID #1488 .
LSASS TID#3848 is executing the sspCryptUnprotectData call which leads into GetMasterKey.
GetMasterKey is taking ~664 seconds (TimesinceLast). LSASS TID 3848. We spend the whole time waiting on LSASS TID 576 which is performing DCLocator pings to find a DC.
File Encryption delay/hang is also accounted by the same code change where the backup is required.
To work around this problem, set the value of the ProtectionPolicy registry entry to 1 to enable local backup of the MasterKey instead of requiring a RWDC in the following registry subkey:HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb
- Text for DNS events is not rendered in DNS Manager mmc snap-in after you install August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2975719) or a later version of monthly updates on Windows Server 2012 R2-based DNS servers.
To work around this problem, view DNS events by using the Event Viewer and Computer Management snap-ins.
How to obtain the update rollup
Method 1: Windows UpdateThis update is provided as an Important update from Windows Update. If you turn on automatic updates, this update is automatically installed.
For more information about Windows Update, see frequently asked questions on Windows Update.
Method 2: Microsoft Download CenterYou can also obtain the stand-alone update package through the Microsoft Download Center.
Download the x86-based Windows 8.1 update package now.
Download the x64-based Windows 8.1 update package now.
Download the x64-based Windows Server 2012 R2 update package now.
- The update for Windows RT 8.1 can be obtained only from Windows Update.
- Update KB3016437 is applicable only to computers that have the Windows Server 2012 R2 Active Directory Domain Services (AD DS) role enabled. If you try to install KB3016437 on a Windows client or a Windows server on which AD DS role is not turned on, the update does not install. There are no other adverse effects.
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
Update detail information
PrerequisitesTo apply this update, you must first install update 2919355 on Windows 8.1 or Windows Server 2012 R2.
Restart informationYou must restart the computer after you apply this update.
Update replacement informationThis update does not replace any previously released update.
File informationFile detail information
For a list of the files that are provided in this update 3000850, download the file information for update 3000850.
File hash information
The following table lists the thumbprints of the certificates that are used to sign the updates (.msu). Verify the certificate thumbprint in this Microsoft Knowledge Base article against the certificate thumbprint indicated on the update that you download.
|File name||SHA1 and SHA2|