Symptoms
The government of Egypt has decided to cancel daylight saving time (DST). This hotfix updates Windows support for (UTC +2:00) Cairo, so it will no longer have DST support. The government of Chile has extended the 2011 DST, so it ends May 7 and starts August 21. This hotfix updates Windows DST support for (UTC -4:00) Santiago so that DST ends May 7, 2011 at 23:59:59.999 and the clock reverts to 23:00:00.000. The update also includes the change for DST to start August 20, 2011, at 23:59:59.999 and the clock to be advanced to 01:00:00.000 of August 21.The government of Morocco has changed the 2011 Daylight Saving Time schedule to end July 30 at midnight. This hotfix updates Windows DST support for (UTC) Casablanca so 2011 DST ends July 30, 2011, at 23:59:59.999, and the clock reverts to 23:00:00.000.Â
Resolution
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.Note: This update is only available as a hotfix.To learn how to address time zone changes for Microsoft Office Outlook, go here: How to address time zone changes for Microsoft Office Outlook
More Information
Registry Key InformationEgypt[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Egypt Standard Time]"TZI"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Egypt Standard Time\Dynamic DST]"FirstEntry"=dword:000007d5"LastEntry"=dword:000007dbÂ"2005"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,09,00,04,00,05,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,05,00,05,00,00,00,00,00,00,00,00,00"2006"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,09,00,04,00,03,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,05,00,05,00,00,00,00,00,00,00,00,00"2007"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,09,00,04,00,01,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,04,00,05,00,17,00,3b,00,3b,00,e7,03"2008"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,08,00,04,00,05,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,04,00,05,00,17,00,3b,00,3b,00,e7,03"2009"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,08,00,04,00,03,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,04,00,04,00,17,00,3b,00,3b,00,e7,03"2010"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,09,00,04,00,05,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,04,00,05,00,17,00,3b,00,3b,00,e7,03"2011"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00Morocco[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Morocco Standard Time]"TZI"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,07,00,06,00,05,00,17,00,3b,\ 00,3b,00,e7,03,00,00,04,00,06,00,01,00,17,00,3b,00,3b,00,e7,03[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Morocco Standard Time\Dynamic DST]"FirstEntry"=dword:000007d7"LastEntry"=dword:000007dc"2007"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00"2008"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,08,00,00,00,05,00,17,00,\ 3b,00,3b,00,e7,03,00,00,05,00,06,00,05,00,17,00,3b,00,3b,00,e7,03"2009"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,08,00,04,00,03,00,17,00,\ 3b,00,3b,00,e7,03,00,00,05,00,00,00,05,00,17,00,3b,00,3b,00,e7,03"2010"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,08,00,06,00,01,00,17,00,\ 3b,00,3b,00,e7,03,00,00,05,00,06,00,01,00,17,00,3b,00,3b,00,e7,03"2011"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,07,00,06,00,05,00,17,00,\ 3b,00,3b,00,e7,03,00,00,04,00,06,00,01,00,17,00,3b,00,3b,00,e7,03"2012"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00Chile[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Pacific SA Standard Time]"TZI"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,05,00,06,00,01,00,17,00,3b,\ 00,3b,00,e7,03,00,00,08,00,06,00,03,00,17,00,3b,00,3b,00,e7,03[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones\Pacific SA Standard Time\Dynamic DST]"FirstEntry"=dword:000007d7"LastEntry"=dword:000007dc"2007"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,02,00,17,00,\ 3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03"2008"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,05,00,17,00,\ 3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03"2009"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,02,00,17,00,\ 3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03"2010"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,04,00,06,00,01,00,17,00,\ 3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03"2011"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,05,00,06,00,01,00,17,00,\ 3b,00,3b,00,e7,03,00,00,08,00,06,00,03,00,17,00,3b,00,3b,00,e7,03"2012"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,03,00,06,00,02,00,17,00,\ 3b,00,3b,00,e7,03,00,00,0a,00,06,00,02,00,17,00,3b,00,3b,00,e7,03
Prerequisites
Prerequisites to install the software update To install this hotfix you must be running one of the following operating system versions :Windows XP SP3Windows Vista SP1 or SP2Windows Server 2003 SP2Windows Server 2008Windows Server 2008 SP2Windows Server 2008 r2Windows Server 2008 r2 SP1Windows 7Windows 7 SP1Restart requirements You may be required to reboot your system after installing this hotfix.This software update replaces the following software updateThis hotfix supplements the December 2010 Windows Daylight Saving Time Cumulative Update, KB 2443685
