The government of Paraguay has shortened DST for 2013 to end on March 23, 2013 instead of April 6, 2013 as per the new DST rules [Official Decree]. This hotfix updates Windows DST support for the [(UTC -4:00) Asuncion] time zone so that DST ends on March 23, 2013 at 23:59:59.999 and the clock reverts to 23:00:00.000. This update also corrects historical timestamp data for Libya for all days before November 10, 2012.
A supported hotfix is now available from Microsoft. To obtain the hotfix, click the link at the top of this page or contact Microsoft Customer Support Services. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:
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 available only as a hotfix.