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

# 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](https://docs.xbox.com/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-target-session.md).

## Member of

[XblMultiplayerSessionMember](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionmember.md)

## Argument of

[XblMultiplayerEventArgsFindMatchCompleted](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted.md)

## Requirements

**Header:** multiplayer\_c.h

## See also

[multiplayer\_c](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members.md)


## Related topics

- [XblMultiplayerEventArgsFindMatchCompleted](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargsfindmatchcompleted.md)
- [XblMultiplayerSessionMember](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionmember.md)
- [multiplayer_c (contents)](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members.md)
- [XblMultiplayerManagerSetQosMeasurements](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayermanagersetqosmeasurements.md)
- [XblMultiplayerPerformQoSMeasurementsArgs](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_manager_c/structs/xblmultiplayerperformqosmeasurementsargs.md)