Queries for the WVDConnections table

Article
09/17/2024

For information on using these queries in the Azure portal, see Log Analytics tutorial. For the REST API, see Query.

Connection Errors

List connection checkpoints and errors for each connection attempt, along with detailed information across all users.

//You can also uncomment the where clause to filter to a specific user if you are troubleshooting an issue. 
WVDConnections 
//| where UserName == "[email protected]" 
| project-away TenantId,SourceSystem  
| summarize arg_max(TimeGenerated, *), StartTime = min(iff(State=='Started', TimeGenerated , datetime(null) )), ConnectTime = min(iff(State=='Connected', TimeGenerated , datetime(null) )) by CorrelationId  
| join kind=leftouter 
(
    WVDErrors
    |summarize Errors=make_list(pack('Code', Code, 'CodeSymbolic', CodeSymbolic, 'Time', TimeGenerated, 'Message', Message ,'ServiceError', ServiceError, 'Source', Source)) by CorrelationId  
) on CorrelationId
| join kind=leftouter 
(
    WVDCheckpoints
    | summarize Checkpoints=make_list(pack('Time', TimeGenerated, 'Name', Name, 'Parameters', Parameters, 'Source', Source)) by CorrelationId  
    | mv-apply Checkpoints on
    (  
        order by todatetime(Checkpoints['Time']) asc
        | summarize Checkpoints=make_list(Checkpoints)
    )
) on CorrelationId  
| project-away CorrelationId1, CorrelationId2  
| order by TimeGenerated desc

Session duration

Lists the duration and connection type of each user's connections.

// The "State" field provides information on the connection stage of an actitivity.
// The delta between "Connected" and "Completed" provides the connection duration.
WVDConnections 
| where State == "Connected"  
| project CorrelationId , UserName, ConnectionType , StartTime=TimeGenerated  
| join kind=inner
(
    WVDConnections  
    | where State == "Completed"  
    | project EndTime=TimeGenerated, CorrelationId
) on CorrelationId  
| project Duration = EndTime - StartTime, ConnectionType, UserName  
| sort by Duration desc

Top 10 users by average connection duration

Lists 10 users with the longest average connection duration.

// Connection activities have 3 states, this query demonstrates how to calculate the connection duration.
WVDConnections  
| where State == "Connected"  
| project CorrelationId, UserName, ConnectionType, StartTime=TimeGenerated  
| join kind=inner
(
    WVDConnections  
    | where State == "Completed"  
    | project EndTime=TimeGenerated, CorrelationId
) on CorrelationId  
| project Duration = EndTime - StartTime, ConnectionType, UserName  
| summarize AVGDuration=avg(Duration) by UserName 
| sort by AVGDuration desc 
| limit 10

Top 10 most active users

Lists top 10 users by total connection duration.

// The connection duration is the delta between "Connected" and "Completed" state.
WVDConnections 
| where State == "Connected" 
| project CorrelationId , UserName, ConnectionType , StartTime=TimeGenerated 
| join kind=inner
(
    WVDConnections 
    | where State == "Completed" 
    | project EndTime=TimeGenerated, CorrelationId
) on CorrelationId 
| extend SessionDuration = EndTime - StartTime
| summarize TotalConnectionTime = sum(SessionDuration) by UserName, ConnectionType
| top 10 by TotalConnectionTime desc

Average connection duration by hostpool

Ranks hostpools by average connection duration.

// Characterize the usage pattern of all hostpools in the current Log Analytics scope
WVDConnections  
| where State == "Connected"
| project ResourceAlias, CorrelationId, StartTime=TimeGenerated, _ResourceId
| join kind = leftouter 
(
    WVDConnections  
    | where State == "Completed"  
    | project EndTime=TimeGenerated, CorrelationId
) on CorrelationId
// If connection hasn't completed yet, it is still running so the end time can be assumed to be now (duration so far)
| project Duration = coalesce(EndTime, now()) - StartTime, _ResourceId
| summarize AvgDuration=avg(Duration) by _ResourceId
| parse _ResourceId with "/subscriptions/" subscription "/resourcegroups/" ResourceGroup "/providers/microsoft.desktopvirtualization/hostpools/" HostPool
| project ResourceGroup, HostPool, AvgDuration
| sort by AvgDuration desc

Client-side operating system information by user count

Produces a bar chart of operating systems used on client devices connecting to the deployment.

// Use this query to understand which OS version users have installed on the devices they are connecting from. 
WVDConnections  
| summarize UserCount=dcount(UserName) by ClientOS 
| sort by UserCount desc 
| render barchart

Azure Virtual Desktop client usage information

List of client types and versions used by users connecting to the deployment.

WVDConnections  
| summarize UserCount=dcount(UserName) by ClientType, ClientVersion 
| sort by ClientVersion, ClientType, UserCount desc

Average session logon time

Lists the average session logon time by host pool and session state.

WVDConnections  
| where TimeGenerated > ago(24h)
| where State == "Started"
| project CorrelationId , UserName, ConnectionType , StartTime=TimeGenerated, _ResourceId
| join kind=inner
(
    WVDConnections
    | where State == "Connected"  
    | project ConnectTime=TimeGenerated, CorrelationId
) on CorrelationId
| join kind=inner
(   
    WVDCheckpoints
    | where Name =~ "LoadBalancedNewConnection"
    | extend LoadBalanceOutcome=tostring(parse_json(Parameters).LoadBalanceOutcome)
) on CorrelationId 
| project Duration = ConnectTime - StartTime, _ResourceId, Session=case(LoadBalanceOutcome in ("Active", "Disconnected"), "ExistingSession", LoadBalanceOutcome == "Pending", "Creating", LoadBalanceOutcome)
// Exclude connections that are happening while another connection kicked off the session creation, since results will be inconclusive
| where Session != "Creating"
| summarize AvgDuration=avg(Duration) by _ResourceId, Session
| parse _ResourceId with "/subscriptions/" subscription "/resourcegroups/" ResourceGroup "/providers/microsoft.desktopvirtualization/hostpools/" HostPool
| project ResourceGroup, HostPool, Session, AvgDuration
| sort by AvgDuration desc

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