Developers who use the .NET Framework may find their applications affected if the application uses the time zone information for historical purposes or if they have derived custom classes from System.TimeZone to provide custom time zone information. The standard System.TimeZone class provides a managed wrapper for the underlying Windows Operating System time zone functions. Refer to Visual Studio and Daylight Saving Time Change for more information.

Device owners should contact the device manufacturer to determine whether or not an update is available.

The Microsoft Java Virtual Machine (MS JVM) will sometimes apply an incorrect time zone rule after the daylight saving update is applied the daylight saving transition has occurred. Microsoft is restricted to providing only security fixes to the MS JVM. Further information the MS JVM is available at http://www.microsoft.com/mscorp/java/default.asp.