Introduction

This article describes monthly updates to the Windows 8 Component-Based Servicing (CBS) components. The updates improve the Windows Defender baseline engines and signatures in the Windows 8 and Windows 8.1 disk images that are created by OEMs.

For the best protection, Windows Defender engines and signatures should be kept up-to-date. A baseline set of engines and signatures is included in the original Windows image, but this baseline will be outdated by the time that it reaches customers.

These updates are offered to OEMs to help keep baseline engines and signatures closer to the current versions. This provides OEMs the ability to optimize the out-of-the-box protection and the download experience.

With Windows 2019 spring release (currently in insider build), a new feature named Tamper Protection is added to the Windows Security app. This feature is enabled to help protect users' devices. The feature can be toggled from Windows Security app:

Screenshot of Windows Security App

If this feature is enabled, disabling Windows defender by using the DisableAntiSpyware group policy key will be prevented. You can continue to register other antivirus solution in Windows Security Center. If you are disabling Windows Defender antivirus because of performance reasons during factory mode customization, you can use volume exclusion instead of turning defender off. See the following MpPreferencecmdlets for examples:

  • powershell add-mppreference -exclusionpath c:\

  • powershell remove-mppreference -exclusionpath c:\

See the following websites for more information:

More Information

Update information

How to obtain this update

These monthly updates are available on the OEM DVDs.

Prerequisites

You must apply the updates to a Windows 8 OEM disk image or a Windows 8.1 OEM disk image.

Note This update must be applied on a Windows image offline before Windows Defender is started. This update is intended to provide users the newer engines and signatures before first run of Windows Defender. If Windows Defender is already running, it may have already started automatically updating engines and signatures through Windows Update and this update is no longer necessary.

How to apply the update to a Windows image

Use Deployment Image Servicing and Management (DISM) to add packages to a Windows image. To do this, run DISM at a command prompt by using the /Add-Package option and pointing to the latest Windows Defender baseline engines and signatures .msu package that you want to add to the Windows image, as follows: dism /image: <Path To Windows Image> /Add-Package /packagepath: <Path To The .msu Update File>

Registry information

To apply the updates, you do not have to make any changes to the registry.

File information

The global version of this update installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows RT, Windows 8" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely 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.

Monthly update in April 2015
Windows RT, Windows 8 file information

File name

File version

File size

Date

Time

Platform

Mpengine.dll

1.1.11602.0

5,974,136

23-Apr-2015

13:07

Not applicable

Mpasbase.vdm

1.197.0.0

10,327,312

23-Apr-2015

13:07

Not applicable

Mpasdlta.vdm

1.197.52.0

26,392

23-Apr-2015

13:07

Not applicable

Mpavbase.vdm

1.197.0.0

18,069,272

23-Apr-2015

13:07

Not applicable

Mpavdlta.vdm

1.197.52.0

57,624

23-Apr-2015

13:07

Not applicable


File name

File version

File size

Date

Time

Platform

Mpengine.dll

1.1.11602.0

9,201,616

23-Apr-2015

13:07

x86

Mpengine.dll

1.1.11602.0

9,201,616

23-Apr-2015

13:07

x86

Mpasbase.vdm

1.197.0.0

28,609,816

23-Apr-2015

13:07

Not applicable

Mpasdlta.vdm

1.197.52.0

72,984

23-Apr-2015

13:07

Not applicable

Mpavbase.vdm

1.197.0.0

110,233,368

23-Apr-2015

13:07

Not applicable

Mpavdlta.vdm

1.197.52.0

253,720

23-Apr-2015

13:07

Not applicable

Mpasbase.vdm

1.197.0.0

28,609,816

23-Apr-2015

13:07

Not applicable

Mpasdlta.vdm

1.197.52.0

72,984

23-Apr-2015

13:07

Not applicable

Mpavbase.vdm

1.197.0.0

110,233,368

23-Apr-2015

13:07

Not applicable

Mpavdlta.vdm

1.197.52.0

253,720

23-Apr-2015

13:07

Not applicable


File name

File version

File size

Date

Time

Platform

Mpengine.dll

1.1.11602.0

12,032,440

23-Apr-2015

13:07

x64

Mpengine.dll

1.1.11602.0

12,032,440

23-Apr-2015

13:07

x64

Mpasbase.vdm

1.197.0.0

28,609,816

23-Apr-2015

13:07

Not applicable

Mpasdlta.vdm

1.197.52.0

72,984

23-Apr-2015

13:07

Not applicable

Mpavbase.vdm

1.197.0.0

110,233,368

23-Apr-2015

13:07

Not applicable

Mpavdlta.vdm

1.197.52.0

253,720

23-Apr-2015

13:07

Not applicable

Mpasbase.vdm

1.197.0.0

28,609,816

23-Apr-2015

13:07

Not applicable

Mpasdlta.vdm

1.197.52.0

72,984

23-Apr-2015

13:07

Not applicable

Mpavbase.vdm

1.197.0.0

110,233,368

23-Apr-2015

13:07

Not applicable

Mpavdlta.vdm

1.197.52.0

253,720

23-Apr-2015

13:07

Not applicable


Windows RT 8.1, Windows 8.1 file information

File name

File version

File size

Date

Time

Platform

Mpengine.dll

1.1.11602.0

5,974,136

23-Apr-2015

13:08

Not applicable

Mpasbase.vdm

1.197.0.0

10,327,312

23-Apr-2015

13:08

Not applicable

Mpasdlta.vdm

1.197.52.0

26,392

23-Apr-2015

13:08

Not applicable

Mpavbase.vdm

1.197.0.0

18,069,272

23-Apr-2015

13:08

Not applicable

Mpavdlta.vdm

1.197.52.0

57,624

23-Apr-2015

13:08

Not applicable

Gapaengine.dll

2.1.11502.0

780,800

31-Mar-2015

22:08

Not applicable

Nisbase.vdm

114.0.0.0

760,048

31-Mar-2015

22:08

Not applicable

Nisfull.vdm

114.12.0.0

776,464

23-Apr-2015

13:08

Not applicable


File name

File version

File size

Date

Time

Platform

Mpengine.dll

1.1.11602.0

9,201,616

23-Apr-2015

13:08

x86

Mpasbase.vdm

1.197.0.0

28,609,816

23-Apr-2015

13:08

Not applicable

Mpasdlta.vdm

1.197.52.0

72,984

23-Apr-2015

13:08

Not applicable

Mpavbase.vdm

1.197.0.0

110,233,368

23-Apr-2015

13:08

Not applicable

Mpavdlta.vdm

1.197.52.0

253,720

23-Apr-2015

13:08

Not applicable

Gapaengine.dll

2.1.11502.0

908,832

31-Mar-2015

22:08

x86

Nisbase.vdm

114.0.0.0

760,048

31-Mar-2015

22:08

Not applicable

Nisfull.vdm

114.12.0.0

776,464

23-Apr-2015

13:08

Not applicable


File name

File version

File size

Date

Time

Platform

Mpengine.dll

1.1.11602.0

12,032,440

23-Apr-2015

13:08

x64

Mpasbase.vdm

1.197.0.0

28,609,816

23-Apr-2015

13:08

Not applicable

Mpasdlta.vdm

1.197.52.0

72,984

23-Apr-2015

13:08

Not applicable

Mpavbase.vdm

1.197.0.0

110,233,368

23-Apr-2015

13:08

Not applicable

Mpavdlta.vdm

1.197.52.0

253,720

23-Apr-2015

13:08

Not applicable

Gapaengine.dll

2.1.11502.0

1,187,344

31-Mar-2015

22:08

x64

Nisbase.vdm

114.0.0.0

760,048

31-Mar-2015

22:08

Not applicable

Nisfull.vdm

114.12.0.0

776,464

23-Apr-2015

13:08

Not applicable


References

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Monthly update in April 2015

File property

Value

File name

Arm_6f1af3446e73c1f0ee86b8ea555271c0_31bf3856ad364e35_6.2.9200.17359_none_7dec973b24da2e33.manifest

File version

Not applicable

File size

696

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

Arm_df978b16d2b7ee31c9d641e41dfbd311_31bf3856ad364e35_6.2.9200.17359_none_f3de1a5b6b4ed171.manifest

File version

Not applicable

File size

694

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

Arm_windows-defender-am-engine_31bf3856ad364e35_6.2.9200.17359_none_fbfe344287882aee.manifest

File version

Not applicable

File size

9,412

Date (UTC)

24-Apr-2015

Time (UTC)

23:34

File name

Arm_windows-defender-am-sigs_31bf3856ad364e35_6.2.9200.17359_none_b95796b2ece8676e.manifest

File version

Not applicable

File size

5,550

Date (UTC)

24-Apr-2015

Time (UTC)

23:34


File property

Value

File name

X86_0ae1d3503073a9ec1b6c14a5570b4159_31bf3856ad364e35_6.2.9200.21472_none_bea688eeee4535a0.manifest

File version

Not applicable

File size

694

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

X86_4e55345eb0fb3227675f4ecdc868dbb8_31bf3856ad364e35_6.2.9200.21472_none_d3cd79522a1c7257.manifest

File version

Not applicable

File size

696

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

X86_a295bf73f2f28e838fcb969718128088_31bf3856ad364e35_6.2.9200.17359_none_1e5da02dd45fad1e.manifest

File version

Not applicable

File size

694

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

X86_a8e79a8cc965d24b5e71e0542e6ceb99_31bf3856ad364e35_6.2.9200.17359_none_67c6aa818af0ca3b.manifest

File version

Not applicable

File size

696

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

X86_windows-defender-am-engine_31bf3856ad364e35_6.2.9200.17359_none_fbfbc1ea878b0c28.manifest

File version

Not applicable

File size

9,412

Date (UTC)

25-Apr-2015

Time (UTC)

04:10

File name

X86_windows-defender-am-engine_31bf3856ad364e35_6.2.9200.21472_none_fc68bcd7a0bf3273.manifest

File version

Not applicable

File size

9,412

Date (UTC)

25-Apr-2015

Time (UTC)

03:38

File name

X86_windows-defender-am-sigs_31bf3856ad364e35_6.2.9200.17359_none_b955245aeceb48a8.manifest

File version

Not applicable

File size

5,550

Date (UTC)

25-Apr-2015

Time (UTC)

04:10

File name

X86_windows-defender-am-sigs_31bf3856ad364e35_6.2.9200.21472_none_b9c21f48061f6ef3.manifest

File version

Not applicable

File size

5,550

Date (UTC)

25-Apr-2015

Time (UTC)

03:38


File property

Value

File name

Amd64_09e06eb1a7520ade827ae5b310691c7e_31bf3856ad364e35_6.2.9200.17359_none_7922b62b7f22bda7.manifest

File version

Not applicable

File size

698

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

Amd64_adac91d0eaa62d1922e4c6789c2299ee_31bf3856ad364e35_6.2.9200.21472_none_8be8b50b763bc171.manifest

File version

Not applicable

File size

700

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

Amd64_cdb397a752f3bfa5c2abd98751d3ad8e_31bf3856ad364e35_6.2.9200.17359_none_e3547b587ebae234.manifest

File version

Not applicable

File size

700

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

Amd64_d9b3b595889b17e9553e18d8de67c0db_31bf3856ad364e35_6.2.9200.21472_none_357c1063b0f31f1a.manifest

File version

Not applicable

File size

698

Date (UTC)

25-Apr-2015

Time (UTC)

21:04

File name

Amd64_windows-defender-am-engine_31bf3856ad364e35_6.2.9200.17359_none_581a5d6e3fe87d5e.manifest

File version

Not applicable

File size

9,416

Date (UTC)

25-Apr-2015

Time (UTC)

07:35

File name

Amd64_windows-defender-am-engine_31bf3856ad364e35_6.2.9200.21472_none_5887585b591ca3a9.manifest

File version

Not applicable

File size

9,416

Date (UTC)

25-Apr-2015

Time (UTC)

05:52

File name

Amd64_windows-defender-am-sigs_31bf3856ad364e35_6.2.9200.17359_none_1573bfdea548b9de.manifest

File version

Not applicable

File size

5,554

Date (UTC)

25-Apr-2015

Time (UTC)

07:35

File name

Amd64_windows-defender-am-sigs_31bf3856ad364e35_6.2.9200.21472_none_15e0bacbbe7ce029.manifest

File version

Not applicable

File size

5,554

Date (UTC)

25-Apr-2015

Time (UTC)

05:52


File property

Value

File name

Arm_0dd87064ce5727ff8185020362138228_31bf3856ad364e35_6.3.9600.17806_none_fba8f32cbf8fd5ba.manifest

File version

Not applicable

File size

696

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Arm_24b06d50f299c8b6b9a2723ab299ff2a_31bf3856ad364e35_6.3.9600.17806_none_06f191000c7b4767.manifest

File version

Not applicable

File size

697

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Arm_528b0742c09c0cd584951e00255ca7ab_31bf3856ad364e35_6.3.9600.17806_none_940c01aa1c370a16.manifest

File version

Not applicable

File size

694

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Arm_9a676dc3a3efa4e296b36a5c64b63bcb_31bf3856ad364e35_6.3.9600.17806_none_688983559c01af92.manifest

File version

Not applicable

File size

695

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Arm_windows-defender-am-engine_31bf3856ad364e35_6.3.9600.17806_none_94260524d1951574.manifest

File version

Not applicable

File size

9,412

Date (UTC)

25-Apr-2015

Time (UTC)

21:34

File name

Arm_windows-defender-am-sigs_31bf3856ad364e35_6.3.9600.17806_none_517f679536f551f4.manifest

File version

Not applicable

File size

5,550

Date (UTC)

25-Apr-2015

Time (UTC)

21:34

File name

Arm_windows-defender-nis-engine_31bf3856ad364e35_6.3.9600.17806_none_f0e8d9587eb83832.manifest

File version

Not applicable

File size

1,899

Date (UTC)

25-Apr-2015

Time (UTC)

21:34

File name

Arm_windows-defender-nis-sigs_31bf3856ad364e35_6.3.9600.17806_none_2b8a81ce7e111178.manifest

File version

Not applicable

File size

2,708

Date (UTC)

25-Apr-2015

Time (UTC)

21:34


File property

Value

File name

X86_9ef56db369a32b870e7754b716783343_31bf3856ad364e35_6.3.9600.17806_none_1ca6ed3e1f547c61.manifest

File version

Not applicable

File size

696

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

X86_a7caaa7803fbacacbf1b7a4264de86ad_31bf3856ad364e35_6.3.9600.17806_none_7198119c13771442.manifest

File version

Not applicable

File size

694

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

X86_c06d6b14e0d31f2a535cc36f78505840_31bf3856ad364e35_6.3.9600.17806_none_bd5ab2d58cf92d28.manifest

File version

Not applicable

File size

695

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

X86_f209d1d843324199b5fd75c1bd3517e3_31bf3856ad364e35_6.3.9600.17806_none_0f07b0e48ed47ee1.manifest

File version

Not applicable

File size

697

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

X86_windows-defender-am-engine_31bf3856ad364e35_6.3.9600.17806_none_942392ccd197f6ae.manifest

File version

Not applicable

File size

9,412

Date (UTC)

25-Apr-2015

Time (UTC)

21:41

File name

X86_windows-defender-am-sigs_31bf3856ad364e35_6.3.9600.17806_none_517cf53d36f8332e.manifest

File version

Not applicable

File size

5,550

Date (UTC)

25-Apr-2015

Time (UTC)

21:41

File name

X86_windows-defender-nis-engine_31bf3856ad364e35_6.3.9600.17806_none_f0e667007ebb196c.manifest

File version

Not applicable

File size

1,899

Date (UTC)

25-Apr-2015

Time (UTC)

21:41

File name

X86_windows-defender-nis-sigs_31bf3856ad364e35_6.3.9600.17806_none_2b880f767e13f2b2.manifest

File version

Not applicable

File size

2,708

Date (UTC)

25-Apr-2015

Time (UTC)

21:41


File property

Value

File name

Amd64_3cb77cd2d42c15ad07fe137e0a045684_31bf3856ad364e35_6.3.9600.17806_none_bcc9b9dab4959aee.manifest

File version

Not applicable

File size

701

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Amd64_74f658fbf4f7311c5e5e1eeb13c39a84_31bf3856ad364e35_6.3.9600.17806_none_e54d6edaba972f67.manifest

File version

Not applicable

File size

698

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Amd64_7a1a894802ba732decae7920994a4e77_31bf3856ad364e35_6.3.9600.17806_none_9be18e23f733f2d3.manifest

File version

Not applicable

File size

700

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Amd64_9a88515270968a85fe2968ede65848d2_31bf3856ad364e35_6.3.9600.17806_none_30e202411c8558c3.manifest

File version

Not applicable

File size

699

Date (UTC)

26-Apr-2015

Time (UTC)

02:37

File name

Amd64_windows-defender-am-engine_31bf3856ad364e35_6.3.9600.17806_none_f0422e5089f567e4.manifest

File version

Not applicable

File size

9,416

Date (UTC)

25-Apr-2015

Time (UTC)

21:55

File name

Amd64_windows-defender-am-sigs_31bf3856ad364e35_6.3.9600.17806_none_ad9b90c0ef55a464.manifest

File version

Not applicable

File size

5,554

Date (UTC)

25-Apr-2015

Time (UTC)

21:55

File name

Amd64_windows-defender-nis-engine_31bf3856ad364e35_6.3.9600.17806_none_4d05028437188aa2.manifest

File version

Not applicable

File size

1,901

Date (UTC)

25-Apr-2015

Time (UTC)

21:55

File name

Amd64_windows-defender-nis-sigs_31bf3856ad364e35_6.3.9600.17806_none_87a6aafa367163e8.manifest

File version

Not applicable

File size

2,710

Date (UTC)

25-Apr-2015

Time (UTC)

21:54


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