> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# XblMultiplayerMeasurementFailure

> XblMultiplayerMeasurementFailure

# XblMultiplayerMeasurementFailure

Defines values that indicate why Quality of Service (QoS) measurement failed during session initialization.

## Syntax

```cpp theme={null}
enum class XblMultiplayerMeasurementFailure  : uint32_t  
{  
    Unknown,  
    None,  
    Timeout,  
    Latency,  
    BandwidthUp,  
    BandwidthDown,  
    Group,  
    Network,  
    Episode  
}  
```

## Constants

| Constant      | Description                                                                                                                      |
| ------------- | -------------------------------------------------------------------------------------------------------------------------------- |
| Unknown       | Unknown measurement failure.                                                                                                     |
| None          | No measurement failure.                                                                                                          |
| Timeout       | Measurement timed out.                                                                                                           |
| Latency       | Measurement of latency failed.                                                                                                   |
| BandwidthUp   | Measurement of upstream (peer-to-host) bandwidth failed.                                                                         |
| BandwidthDown | Measurement of downstream (host-to-peer) bandwidth failed.                                                                       |
| Group         | Measurement failed for this player failed because measurement failed for another player in the group.                            |
| Network       | Measurement failed due to a network error; for example, the player was unreachable.                                              |
| Episode       | Measurement failed because the initialization episode failed. This likely happened because not enough users were in the session. |

## Remarks

For more information, see [Target session initialization and QoS](/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-target-session).

## Member of

[XblMultiplayerSessionMember](/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionmember)

## Argument of

[XblMultiplayerEventArgsFindMatchCompleted](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted)

## Requirements

**Header:** multiplayer\_c.h

## See also

[multiplayer\_c](/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members)


## Related topics

- [XblMultiplayerEventArgsFindMatchCompleted](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted.md)
- [XblMultiplayerSessionMember](/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionmember.md)
- [XblMultiplayerPerformQoSMeasurementsArgs](/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayerperformqosmeasurementsargs.md)
- [XblMultiplayerEventArgsPerformQoSMeasurements](/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsperformqosmeasurements.md)
- [PlayFab Party QoS measurements](/services/playfab/multiplayer/networking/concepts-regions.md)