Min version	Vista	Vista SP1
Max version		Vista SP2
x86 offset offset:bitpos	Field Name
0x0000	unsigned long Signature
0x0004	unsigned long Flags	union _WHEA_ERROR_PACKET_FLAGS Flags
0x0008	uint64_t Size	unsigned long Size
0x000C		unsigned long RawDataLength
0x0010	uint64_t RawDataLength	uint64_t Reserved1
0x0018	uint64_t Context
0x0020	enum _WHEA_ERROR_TYPE ErrorType
0x0024	enum _WHEA_ERROR_SEVERITY ErrorSeverity
0x0028	unsigned long ErrorSourceId
0x002C	enum _WHEA_ERROR_SOURCE_TYPE ErrorSourceType
0x0030	unsigned long Reserved1	unsigned long Reserved2
0x0034	unsigned long Version
0x0038	uint64_t Cpu
0x0040	union <unnamed-tag> u
0x0110	enum _WHEA_ERROR_STATUS_FORMAT RawDataFormat	enum _WHEA_RAW_DATA_FORMAT RawDataFormat
0x0114	unsigned long Reserved2	unsigned long RawDataOffset
0x0118	uint8_t[1] RawData