Applies ToWindows Server 2012 R2 Datacenter Windows Server 2012 R2 Standard Windows Server 2012 R2 Essentials Windows Server 2012 R2 Foundation Windows 8.1 Enterprise Windows 8.1 Pro Windows 8.1 Windows RT 8.1

This article describes an issue that occurs when you set the MinDiffAreaFileSize registry value to specify the minimum initial size in Windows Server 2012 R2. You can fix this issue by using the update in this article. Before you install this update, see the Prerequisites section.

Symptoms

The MinDiffAreaFileSize registry is ignored, and the initial size of the diff area is calculated by other logic that's based on free space and filesystem size.

How to get this update

You can get this update by using one of the following methods. We have released an update through Windows Update and Microsoft Download Center. Even though this issue is observed only in Windows Server 2012 R2, the update also applies to Windows 8.1 and Windows RT 8.1. Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as a Recommended update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center:

Operating system

Update

All supported x86-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.

Note The update for Windows RT 8.1 can be downloaded only from Windows Update. For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Update detail information

Prerequisites

To apply this update, you must have April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355) installed in Windows 8.1 or Windows Server 2012 R2.

Registry information

To apply this update, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this update.

Update replacement information

This update doesn't replace a previously released update.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

Learn about the terminology that Microsoft uses to describe software updates.

File Information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables.

Notes

  • The files that apply to a specific product, milestone (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table:

    Version

    Product

    Milestone

    Service branch

    6.3.960 0.18 xxx

    Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2

    RTM

    GDR

  • GDR service branches contain only those fixes that are widely released to address widespread, critical issues. LDR service branches contain hotfixes in addition to widely released fixes.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed in the "Additional file information" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Volsnap.sys

6.3.9600.18230

244,584

06-Feb-2016

22:52

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Volsnap.sys

6.3.9600.18230

316,760

06-Feb-2016

22:41

x64

x86 Windows 8.1

File name

File version

File size

Date

Time

Platform

Volsnap.sys

6.3.9600.18230

265,048

06-Feb-2016

22:46

x86

Windows RT 8.1

File property

Value

File name

Arm_volume.inf_31bf3856ad364e35_6.3.9600.18230_none_aa8acd5e1786f3db.manifest

File version

Not applicable

File size

2,103

Date (UTC)

06-Feb-2016

Time (UTC)

23:00

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,585

Date (UTC)

06-Feb-2016

Time (UTC)

23:00

Platform

Not applicable

x64 Windows 8.1 and Windows Server 2012 R2

File property

Value

File name

Amd64_volume.inf_31bf3856ad364e35_6.3.9600.18230_none_06a6f689cfe7464b.manifest

File version

Not applicable

File size

2,107

Date (UTC)

06-Feb-2016

Time (UTC)

23:07

Platform

Not applicable

File name

Update.mum

File version

Not applicable

File size

1,593

Date (UTC)

06-Feb-2016

Time (UTC)

23:00

Platform

Not applicable

x86 Windows 8.1

File property

Value

File name

Update.mum

File version

Not applicable

File size

1,585

Date (UTC)

06-Feb-2016

Time (UTC)

23:00

Platform

Not applicable

File name

X86_volume.inf_31bf3856ad364e35_6.3.9600.18230_none_aa885b061789d515.manifest

File version

Not applicable

File size

2,103

Date (UTC)

06-Feb-2016

Time (UTC)

23:04

Platform

Not applicable

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