This documentation is archived and is not being maintained.

InvalidTimeZoneException Class

The exception that is thrown when time zone information is invalid.

Namespace:  System
Assembly:  System.Core (in System.Core.dll)

[HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort = true)]
public class InvalidTimeZoneException : Exception


The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: MayLeakOnAbort. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

This exception is thrown when a TimeZoneInfo object contains invalid, incomplete, or missing data. It is thrown by the FindSystemTimeZoneById method when a time zone is found in the registry but contains corrupted data. It can also be thrown by the CreateCustomTimeZone method under any of the following conditions:

  • The adjustment rules overlap.

  • The adjustment rules contain one or more null elements.

  • The sum of the Coordinated Universal Time (UTC) offset and daylight delta is out of range. (It is either greater than 14 hours or less than -14 hours.)

  • A single date has multiple adjustment rules applied to it.

This exception is not thrown to indicate that the time zone is not defined on a particular system; the TimeZoneNotFoundException is used for this purpose.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5