Disabling Day/time Savings #Microsoft #Windows #Egypt #DST

The Egyptian government announced on Wednesday 20 April 2011 that summer daylight saving time (DST) will be canceled in Egypt. By default, all windows platforms configured with Egypt time zone (GMT+02:00) Cairo will start the DST by the last Thursday of April by adding one hour at 28 April 2011 @ 23:59:59.

Microsoft will be releasing a new hotfix to disable DST, however due to time limitation we might have a delay until we get that update, until further notice use the below steps to disable it.

As a workaround, to deactivate daylight saving settings and avoid adding an hour by the last Thursday of April, the “Automatically Adjust Clock for Daylight Saving” checkbox needs to be unchecked. Automated ways for Windows 2008 R2, Windows 7, Windows XP and Windows 2003 are listed below. Unfortunately, there is no automation in toggling this checkbox in Windows 2008 and Vista, it will need to be done manually.

Issue:

Windows Daylight Saving Time (DST) Will be canceled in Egypt

Symptoms:

Your computer’s clock may start the daylight saving time (adding 1 hour) on the last Thursday of April at 23:59:59, and it may end the daylight saving time (deducting 1 hour) on the last Thursday of September at 11:59:59 PM.

However, in Egypt, daylight saving time has been canceled, and there is no need to add or deduct this 1 hour.
The behavior will only occur if the Date/Time Properties settings are set to the following:

Time Zone is set to (GMT+02:00) Cairo.
-and-
The Automatically adjust clock for daylight saving changes check box is selected.

Business Impact:

· Active Directory Replication fails.

· Users will be unable to join / logon to all Active Directory Domains.

· The Global Catalog server is unavailable, and the Exchange services cannot be started.

· Users are not able to access their e-mail as the Exchange Server services are down.

· The Free/busy calendar information will show the old time (One extra hour).

· Calendar appointments will be off by 1 hour.

Resolution:

Any of following resolution can be used:

· Microsoft Windows7 and Microsoft Windows server 2008 R2

“Automatically adjust clock for daylight saving changes” can be disabled by using a built-in command line utility called Tzutil.exe:

Tzutil.exe /s “Egypt Standard Time”_dstoff

The above command will clear the DST checkbox. You can run this command in a script file to force the change on all Win7/2k8 R2 machines. It’s recommended that you re-type this command rather than copy/paste from email.

· Microsoft Windows XP and Microsoft Windows Server 2003

“Automatically adjust clock for daylight saving changes” can be disabled by using the below commands with TZChange.exe:

reg.exe add HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation /f /v DisableAutoDaylightTimeSet /t REG_DWORD /d 1

TZCHANGE.exe /C “Middle East Standard Time”

TZCHANGE.exe /C “Egypt Standard Time”

The above command will clear the DST checkbox. You can run this command in a script file to force the change on all Win7/2k8 R2 machines. It’s recommended that you re-type this command rather than copy/paste from email.

· Microsoft Windows Server 2008 / Vista

“Automatically adjust clock for daylight saving changes” checkbox needs to be manually disabled.

Prerequisites

The following list contains prerequisites for this solution:

• Windows XP SP3

• Windows 2003 SP2

• Windows 7 RTM

• Windows 2008 R2

Applies to

• Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)

• Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)

• Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)

• Microsoft Windows Server 2003 R2 Standard x64 Edition

• Microsoft Windows Server 2003 R2 Datacenter x64 Edition

• Microsoft Windows Server 2003, Standard x64 Edition

• Microsoft Windows Server 2003, Enterprise x64 Edition

• Microsoft Windows Server 2003, Datacenter x64 Edition

• Microsoft Windows Server 2003 Service Pack 1, when used with:

Microsoft Windows Server 2003, Standard Edition (32-bit x86)

Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)

Microsoft Windows Server 2003, Web Edition

Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)

Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems

Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems

• Microsoft Windows Server 2003 Service Pack 2, when used with:

Microsoft Windows Server 2003, Standard Edition (32-bit x86)

Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)

Microsoft Windows Server 2003, Web Edition

Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)

Microsoft Windows Server 2003, Standard x64 Edition

Microsoft Windows Server 2003, Enterprise x64 Edition

Microsoft Windows Server 2003, Datacenter x64 Edition

Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems

Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems

Microsoft Windows Server 2003 R2 Standard Edition (32-bit x86)

Microsoft Windows Server 2003 R2 Enterprise Edition (32-Bit x86)

Microsoft Windows Server 2003 R2 Datacenter Edition (32-Bit x86)

Microsoft Windows Server 2003 R2 Standard x64 Edition

Microsoft Windows Server 2003 R2 Datacenter x64 Edition

Microsoft Windows XP Professional x64 Edition

• Microsoft Windows XP Tablet PC Edition 2005

• Microsoft Windows XP Media Center Edition 2005

• Microsoft Windows XP Service Pack 3, when used with:

Microsoft Windows XP Home Edition

Microsoft Windows XP Professional

• Microsoft Windows XP Service Pack 2, when used with:

Microsoft Windows XP Home Edition

Microsoft Windows XP Professional

• Windows 7 Ultimate

• Windows 7 Enterprise

• Windows 7 Home Premium

• Windows 7 Home Basic

• Windows 7 Starter

• Windows 7 Ultimate 64-bit Edition

• Windows 7 Enterprise 64-bit Edition

• Windows 7 Home Premium 64-bit Edition

• Windows Server 2008 R2

Windows Server 2008 R2 for Itanium-Based Systems

Windows Server 2008 R2 Datacenter

Windows Server 2008 R2 Enterprise

Windows Server 2008 R2 Standard

Windows Web Server R2 2008

Mahmoud Magdy

Geek and Microsoft Exchange Server MVP, Solutions Architect at Ingazat Information Technology, Father and in deep love with my wife nad daughter, Aikidoka and have Aikido Green Belt so watch out ;).

mahmoud-magdy has 9 posts and counting.See all posts by mahmoud-magdy

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