This exception is thrown when the HMAC value included in the request does not match the value calculated on the server. Usually this happens when some value, such as the subscriber ID or signing key, was incorrect when creating the original HMAC value.

Determines whether the specified Object is equal to the current Object.

When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

Serves as a hash function for a particular type.

When overridden in a derived class, sets the SerializationInfo with information about the exception.

Gets the runtime type of the current instance.

Creates and returns a string representation of the current exception.

Gets a collection of key/value pairs that provide additional user-defined information about the exception.

Gets or sets a link to the help file associated with this exception.

Gets the Exception instance that caused the current exception.

Gets a message that describes the current exception.

Gets or sets the name of the application or the object that causes the error.

Gets a string representation of the immediate frames on the call stack.

Gets the method that throws the current exception.