Microsoft Windows Daylight Saving Time and Time Zone update now available (December 2009)
First published on TECHNET on Nov 24, 2009 The most recent cumulative update to daylight saving time (DST) and world time zones (TZ) is now available for supported versions of the Windows Operating System via Microsoft Download Center and Windows Update.Time Zones not updating on Windows 2003, Windows XP or Windows 2000
First published on TECHNET on Mar 11, 2007 After applying 931836 time zone changes don’t take effect until you manually change the time zone Symptom: We have isolated reports that Windows 2000, XP, and 2003 may find that their Windows clocks do not move forward for DST, even with fixes applied from 931836 or 928388.