| 0x04 | MaxMembersInSession | uint | 2 flags |
| 0x04 | Visibility | XblMultiplayerSessionVisibility | 2 flags |
| — | InitiatorXuids | uint8 | Private+1 flags |
| 0x0008 | 0x08 | padding / unreflected |
| 0x08 | InitiatorXuidsCount | SizeT | 2 flags |
| 0x08 | CustomJson | UTF8StringPtr | 2 flags |
| 0x08 | SessionCloudComputePackageConstantsJson | UTF8StringPtr | 2 flags |
| 0x08 | MemberReservedTimeout | ulong | 2 flags |
| 0x08 | MemberInactiveTimeout | ulong | 2 flags |
| 0x08 | MemberReadyTimeout | ulong | 2 flags |
| 0x08 | SessionEmptyTimeout | ulong | 2 flags |
| 0x08 | ArbitrationTimeout | ulong | 2 flags |
| 0x08 | ForfeitTimeout | ulong | 2 flags |
| 0x01 | EnableMetricsLatency | NativeBool | 2 flags |
| 0x01 | EnableMetricsBandwidthDown | NativeBool | 2 flags |
| 0x01 | EnableMetricsBandwidthUp | NativeBool | 2 flags |
| 0x01 | EnableMetricsCustom | NativeBool | 2 flags |
| 0x005C | 0x04 | padding / unreflected |
| — | MemberInitialization | uint8 | Private+1 flags |
| 0x0060 | 0x08 | padding / unreflected |
| 0x10 | PeerToPeerRequirements | XblMultiplayerPeerToPeerRequirements | 2 flags |
| 0x20 | PeerToHostRequirements | XblMultiplayerPeerToHostRequirements | 2 flags |
| 0x08 | MeasurementServerAddressesJson | UTF8StringPtr | 2 flags |
| 0x01 | ClientMatchmakingCapable | NativeBool | 2 flags |
| 0x0B | SessionCapabilities | XblMultiplayerSessionCapabilities | 2 flags |
| 0x00AC | 0x04 | unreflected bytes to end of XblMultiplayerSessionConstants |