This article describes a hotfix that updates daylight saving time (DST) settings for Mexico, Mongolia, and Iran. This update supersedes KB 3039024. Before you install this hotfix, check the Prerequisites section in this article.

Introduction

Mexico

A new time zone, “Eastern Standard Time (Mexico),” was added in KB 3039024. It was originally set to observe DST from the first Sunday of April through the last Sunday of October. However, according to the latest announcement from the Mexican government, this time zone does not observe DST. Therefore, the previous DST rules for this time zone are removed in this update.

Mongolia

Mongolia will observe DST starting this year. DST for Mongolia starts on the last Saturday of March at 02:00 and ends on the last Saturday of September at 00:00. The following DST rules will be observed.

Time zone key name

Display name

DST start

DST end

Mongolia Standard Time

(UTC+8:00) Ulaanbaatar

Last Saturday of March at 02:00:00.000

Last Saturday of September at 00:00:00.000

Iran

Iran follows the Persian calendar. This update corrects the DST data for "Iran Standard Time" in Windows for the years 2015 through 2024.

Hotfix information

This hotfix applies to the following operating systems:

  • Windows Server 2012 R2

  • Windows 8.1

  • Windows RT 8.1

  • Windows Server 2012

  • Windows 8

  • Windows RT

  • Windows Server 2008 R2 Service Pack 1 (SP1)

  • Windows 7 SP1

  • Windows Server 2008 Service Pack 2 (SP2)

  • Windows Vista SP2

  • Windows Server 2003 SP2

  • Windows XP Embedded

How to obtain this hotfix

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem.

If the hotfix is available for download, there is a "Hotfix Download Available" section at the top of this Knowledge Base article. If this section does not appear, submit a request to Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix Download Available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must have the following update rollup or service pack installed for the indicated systems. There are no prerequisites to apply the hotfix to systems that are not listed here.

Windows 8.1 or Windows Server 2012 R2

April 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 (2919355)

Windows 7 or Windows Server 2008 R2

Service Pack 1 for Windows 7 or Windows Server 2008 R2

Windows Server 2003

Service Pack 2 for Windows Server 2003

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

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

Hotfix replacement information

This hotfix replaces hotfix 3039024.

The English version of this hotfix 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.










Windows 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 hotfixes and Windows Server 2012 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8.1/Windows Server 2012 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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 0.16 xxx

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

    RTM

    GDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are not listed.

For all supported x86-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.3.9600.16384

2,048

22-Aug-2013

04:17

x86

For all supported x64-based versions of Windows 8.1 and Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.3.9600.16384

2,048

22-Aug-2013

11:45

x64

Tzres.dll

6.3.9600.16384

2,048

22-Aug-2013

04:17

x86

For all supported ARM-based versions of Windows 8.1

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.3.9600.16384

2,048

22-Aug-2013

03:16

Not applicable

Windows 8 and Windows Server 2012 file information and notes

Important Windows 8 hotfixes and Windows Server 2012 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 8/Windows Server 2012" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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

    6.2.920 0.16xxx

    Windows RT, Windows 8, and Windows Server 2012

    RTM

    GDR

    6.2.920 0.20xxx

    Windows RT, Windows 8, and Windows Server 2012

    RTM

    LDR

  • 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 not listed.

For all supported x86-based versions of Windows 8

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.2.9200.16479

2,048

13-Dec-2012

03:59

x86

Tzres.dll

6.2.9200.20583

2,048

13-Dec-2012

04:03

x86

For all supported x64-based versions of Windows 8 and Windows Server 2012

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.2.9200.16479

2,048

13-Dec-2012

04:00

x64

Tzres.dll

6.2.9200.20583

2,048

13-Dec-2012

04:04

x64

Tzres.dll

6.2.9200.16479

2,048

13-Dec-2012

03:59

x86

Tzres.dll

6.2.9200.20583

2,048

13-Dec-2012

04:03

x86

For all supported Windows RT

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.2.9200.16454

2,048

09-Nov-2012

03:11

Not applicable

Windows 7 and Windows Server 2008 R2 file information and notes

Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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

    6.1.760 1.18xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    GDR

    6.1.760 1.23xxx

    Windows 7 and Windows Server 2008 R2

    SP1

    LDR

  • 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 not listed.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.1.7601.18801

2,048

20-Mar-2015

03:04

x86

Tzupd.exe

6.1.7601.18801

40,448

20-Mar-2015

03:06

x86

Tzres.dll

6.1.7601.23005

2,048

20-Mar-2015

03:33

x86

Tzupd.exe

6.1.7601.23005

40,448

20-Mar-2015

03:39

x86

For all supported x64-based versions of Windows 7 and Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.1.7601.18801

2,048

20-Mar-2015

03:21

x64

Tzupd.exe

6.1.7601.18801

49,664

20-Mar-2015

03:23

x64

Tzres.dll

6.1.7601.23005

2,048

20-Mar-2015

03:37

x64

Tzupd.exe

6.1.7601.23005

49,664

20-Mar-2015

03:42

x64

Tzres.dll

6.1.7601.18801

2,048

20-Mar-2015

03:04

x86

Tzres.dll

6.1.7601.23005

2,048

20-Mar-2015

03:33

x86

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.1.7601.18801

2,048

20-Mar-2015

02:19

IA-64

Tzupd.exe

6.1.7601.18801

78,848

20-Mar-2015

02:21

IA-64

Tzres.dll

6.1.7601.23005

2,048

20-Mar-2015

02:27

IA-64

Tzupd.exe

6.1.7601.23005

78,848

20-Mar-2015

02:29

IA-64

Tzres.dll

6.1.7601.18801

2,048

20-Mar-2015

03:04

x86

Tzres.dll

6.1.7601.23005

2,048

20-Mar-2015

03:33

x86

Windows Vista and Windows Server 2008 file information and notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista/Windows Server 2008" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • 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

    6.0.600 2.19xxx

    Windows Vista and Windows Server 2008

    SP2

    GDR

    6.0.600 2.23xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • 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 not listed.

For all supported x86-based versions of Windows Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.0.6002.19346

2,048

20-Mar-2015

00:16

x86

Tzupd.exe

6.0.6002.19346

19,456

20-Mar-2015

00:16

x86

Tzres.dll

6.0.6002.23654

2,048

19-Mar-2015

23:53

x86

Tzupd.exe

6.0.6002.23654

19,456

19-Mar-2015

23:53

x86

For all supported x64-based versions of Windows Vista and Windows Server 2008

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.0.6002.19346

2,048

20-Mar-2015

00:22

x64

Tzupd.exe

6.0.6002.19346

20,992

20-Mar-2015

00:22

x64

Tzres.dll

6.0.6002.23654

2,048

20-Mar-2015

00:16

x64

Tzupd.exe

6.0.6002.23654

20,992

20-Mar-2015

00:16

x64

Tzres.dll

6.0.6002.19346

2,048

20-Mar-2015

00:16

x86

Tzupd.exe

6.0.6002.19346

19,456

20-Mar-2015

00:16

x86

Tzres.dll

6.0.6002.23654

2,048

19-Mar-2015

23:53

x86

Tzupd.exe

6.0.6002.23654

19,456

19-Mar-2015

23:53

x86

For all supported IA-64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Tzres.dll

6.0.6002.19346

2,048

20-Mar-2015

00:12

IA-64

Tzupd.exe

6.0.6002.19346

37,888

20-Mar-2015

00:12

IA-64

Tzres.dll

6.0.6002.23654

2,048

19-Mar-2015

23:57

IA-64

Tzupd.exe

6.0.6002.23654

37,888

19-Mar-2015

23:57

IA-64

Tzres.dll

6.0.6002.19346

2,048

20-Mar-2015

00:16

x86

Tzupd.exe

6.0.6002.19346

19,456

20-Mar-2015

00:16

x86

Tzres.dll

6.0.6002.23654

2,048

19-Mar-2015

23:53

x86

Tzupd.exe

6.0.6002.23654

19,456

19-Mar-2015

23:53

x86

Windows Server 2003 file information and note

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are not listed.

For all supported x86-based versions of Windows Server 2003

File name

File version

File size

Date

Time

Platform

Tzchange.dll

5.2.3790.5583

17,408

20-Mar-2015

22:13

x86

Tzchange.exe

5.2.3790.5583

46,080

17-Mar-2015

05:24

x86

Tzchange.dll

5.2.3790.5583

17,408

20-Mar-2015

22:13

x86

For all supported x64-based versions of Windows Server 2003

File name

File version

File size

Date

Time

Platform

Tzchange.dll

5.2.3790.5583

22,016

20-Mar-2015

07:23

x64

Tzchange.exe

5.2.3790.5583

60,928

20-Mar-2015

07:20

x64

Wtzchange.exe

5.2.3790.5583

46,080

20-Mar-2015

07:20

x86

Tzchange.dll

5.2.3790.5583

22,016

20-Mar-2015

07:23

x64

For all supported IA-64-based versions of Windows Server 2003

File name

File version

File size

Date

Time

Platform

Tzchange.dll

5.2.3790.5583

37,888

20-Mar-2015

07:23

IA-64

Tzchange.exe

5.2.3790.5583

91,648

20-Mar-2015

07:19

IA-64

Wtzchange.exe

5.2.3790.5583

46,080

20-Mar-2015

07:19

x86

Tzchange.dll

5.2.3790.5583

37,888

20-Mar-2015

07:23

IA-64

Windows XP file information and note

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are not listed.

For all supported x86-based versions of Windows XP

File name

File version

File size

Date

Time

Platform

Tzchange.dll

5.1.2600.6777

16,896

20-Mar-2015

20:23

x86

Tzchange.exe

5.1.2600.6777

46,080

20-Mar-2015

01:30

x86

Tzchange.dll

5.1.2600.6777

16,896

20-Mar-2015

20:23

x86

References

See the terminology that Microsoft uses to describe software updates.

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

What affected your experience?

Thank you for your feedback!

×