Author: James Mounsey-Moran

  • Microsoft MVP 2026 – James Mounsey-Moran

    Microsoft MVP 2026 – James Mounsey-Moran

    Oh wow this is an amazing one! I’ve been awarded the Microsoft MVP 2026 for Data Platform! Power BI specifically!


    Genuinely can’t believe it! It has been so great giving back to the community in many many ways that originally helped me build Prism. Something that has shaped my life and career massively!

    So many people I can thank here, it’s amazing how many people have supported me along the way.

    First of all, of course a massive thanks to Kristine Kolodziejski 🏎️for helping me build up, guiding me through everything and ultimately nominating me! Thankyou so so much, it means so much to me it really does!

    Secondly, of course thankyou to my family, who have been dealing with me talking about and writing blogs at random points in the week, attending conferences up and down the country and hearing about Prism and PowerBI for the 100th time that day!

    Thankyou for the amazing support I’ve had from Charlotte Henigan Simon Williams Wesley Worland and all of Trustmarque who have pushed me, guided me forward and let me create and build with such an incredible group of colleagues, customers and community all the same.

    So many faces, past and new have been there to push me forward, give feedback, offer kind words and just motivate me in every way possible!

    This list could be ten times longer without a doubt but here goes with more thanks! Chris Phillips Damien Masterson Kathryn Reeves Emma Hurrell David Warner II Jordan Berger Sean Hannah Chloe Picton Russell Payne

    Thankyou so much for everything, you are all just amazing!

  • Search for PowerBI parameters with PowerShell

    Search for PowerBI parameters with PowerShell

    Thanks for bearing with me! First blog post of 2026, lets just say I have been busy! To start us off, I have another PowerShell script I put together the end of last year, a way to search for PowerBI parameters with PowerShell.

    When running:

    • multiple workspaces
    • with multiple reports
    • all with multiple parameters

    Sometimes, it seems you need an easy solution to find where you have set parameters to specific items.

    My use case for example, I have a number of reports pointing to a specific data source. When migrating that data source I wanted to discover which reports where still attached so this script made it super simple!

    This PowerShell script, similar to a few of my others will loop through all the PowerBI workspaces you have access to, and at the same time loop through every report and parameter, logging where it finds the defined parameter as it goes.

    The parameters endpoint for every dataset makes it simple to find this information and we can simply loop through each. It will naturally log results in a custom object showing the:

    • Workspace Name
    • Report Name
    • Parameter Name
    • Current Parameter Value
    • Dataset ID

    This is one is a real simple one, just change the searchValue to the actual value of the parameter itself you want to discover, for example

    Parameter Name : Source

    Parameter Value : SQLDB1

    So in this case we search for SQLDB1

    So hopefully this will help you! It certainly saved a huge amount of time for me! code below!

    Connect-PowerBIServiceAccount
    
    # The value you are searching for
    $SearchValue = "Domain"
    
    $workspaces = Get-PowerBIWorkspace -All
    
    Write-Host "Starting Scan" -ForegroundColor Yellow
    
    
    $Results = $workspaces | ForEach-Object -Parallel {
        $Target = $using:SearchValue
        $workspace = $_
        
        try {
            # Get reports in this workspace
            $Reportlist = Get-PowerBIReport -WorkspaceId $workspace.Id
            
            foreach ($Report in $Reportlist) {
                if (-not $Report.DatasetId) { continue }
    
                # Fetch parameters for the dataset
                $Url = "https://api.powerbi.com/v1.0/myorg/groups/$($workspace.Id)/datasets/$($Report.DatasetId)/parameters"
                $resp = Invoke-PowerBIRestMethod -Url $Url -Method Get
                $params = (ConvertFrom-Json $resp).value
    
                foreach ($p in $params) {
                    if ($p.currentValue -eq $Target) {
                        
                        Write-Host "[MATCH] Workspace: $($workspace.Name)" -ForegroundColor Cyan
                        Write-Host "        Report:    $($Report.Name)" -ForegroundColor White
                        Write-Host "        Parameter: $($p.name)" -ForegroundColor Green
    
    
                        # Collect in Object
                        [PSCustomObject]@{
                            Workspace     = $workspace.Name
                            Report        = $Report.Name
                            ParameterName = $p.name
                            ParameterValue = $p.currentValue
                            DatasetId     = $Report.DatasetId
                        }
                    }
                }
            }
        } catch {
            # Skip datasets that cannot be accessed
        }
    } -ThrottleLimit 8
    
    if ($Results) {
        $Results | Out-GridView -Title "Search Results: Parameter Value '$SearchValue'"
    } else {
        Write-Host "No reports found with parameter value: $SearchValue" -ForegroundColor Red
    }
  • Prevent scheduled refresh from being disabled due to inactivity

    Prevent scheduled refresh from being disabled due to inactivity

    When you use scheduled refresh in the Power BI service, it pauses if nobody accesses the report or dataset for 60 days. That’s fine from a load perspective, but if you want your datasets to always have the latest data and be available on demand, you’ll need to stop that from happening.

    Now there are some manual approaches such as creating a Subscription on each dataset within the service UI, but if we are putting our reports out at scale that just isn’t viable. So what we can do is build a PowerShell script that will loop through each of our datasets and prevent scheduled refresh from being disabled due to inactivity.

    The best way to achieve this is to trigger activity on the dataset. I do this by querying a table and column I know exist and discarding the result.

    For the full script, scroll down, but I’ll cover what it does and what bits you can change.

    When building the script, permissions can make it harder to directly access certain tables with PowerShell. If we know the exact name of the tables to try and a column within them then we access it directly.

    Firstly within this part of the code, choose a table within your dataset. When I was building I was checking for a couple of tables that had the same column name.

    #Select which tables exist in the datasets
    $tablesToTry = @(
        "######",
        "######"
    )

    Next, pick a column to query. I used [id] in my example.

    #Column to try within the tables
    $columnSuffix = "####"

    Lastly I had certain named datasets I wanted to query and some I wanted to exclude so that can be covered in this part of the code

    #Dataset names to include or exclude - blank returns all, separate with | for multiple
    $include = ""
    $exclude = ""

    Connect to Power BI

    The script starts by connecting to your Power BI account using:

    Connect-PowerBIServiceAccount
    

    If the connection fails, it stops and logs a warning. Once connected, the script can access all workspaces and datasets your account has permission to see.

    Gather Workspaces and Datasets

    It retrieves all your workspaces using:

    Get-PowerBIWorkspace -All
    

    Then, for each workspace, it lists all datasets. You can filter which datasets to include or exclude with simple patterns. For example:

    $include = "Sales|Finance"
    $exclude = "Test"
    

    Test Tables and Columns

    For each dataset, the script loops through a list of tables you specify:

    $tablesToTry = @("Orders", "Customers")
    $columnSuffix = "id"
    

    It builds a DAX query for each table/column combination, using TOPN to return a small sample. This keeps the load low while confirming the table exists and is accessible.

    Example query generated for the “Orders” table:

    EVALUATE
    TOPN(10, 'Orders', 'Orders'[id], DESC)

    Execute Queries via REST API

    The script runs the queries using the Power BI REST API:

    Invoke-PowerBIRestMethod -Url "datasets/$($dataset.Id)/executeQueries" -Method Post
    
    • If the query succeeds, it logs the dataset and table in $successfulDatasets and prints the rows.
    • If it fails, it captures the error and logs it in $failedDatasets for troubleshooting later.

    Trigger Report Usage

    For each dataset, the script looks for reports linked to it:

    Get-PowerBIReport -WorkspaceId $workspace.Id | Where-Object { $_.DatasetId -eq $dataset.Id }
    

    If a report is linked, the script exports it to PDF and discards the file. The export counts as usage and keeps the dataset active.

    Invoke-PowerBIRestMethod -Url "reports/$($report.Id)/ExportTo" -Method Post -Body (@{ format = "PDF" } | ConvertTo-Json)
    

    Logging and Results

    At the end, the script prints three tables:

    • ✅ Successfully queried datasets
    • ❌ Datasets that failed
    • 📊 Datasets where usage was triggered

    # ============================
    # POWERBI Trigger Usage
    # James Mounsey-Moran
    # ============================
    
    
    # ============================
    # CONFIGURATION
    # ============================
    
    
    #Select which tables exist in the datasets
    $tablesToTry = @(
        "######",
        "######"
    )
    
    
    #Column to try within the tables
    $columnSuffix = "####"
    
    #Dataset names to include or exclude - blank returns all, separate with | for multiple
    $include = ""
    $exclude = ""
    
    
    
    # ============================
    
    $daxQueryTemplate = @"
    EVALUATE
    TOPN(10, {0}, {1}, DESC)
    "@
    
    $failedDatasets     = @()
    $successfulDatasets = @()
    $usageTriggered     = @()
    
    # ============================
    # CONNECT TO POWER BI SERVICE
    # ============================
    try {
        Connect-PowerBIServiceAccount -ErrorAction Stop
    }
    catch {
        Write-Warning "Failed to connect to Power BI Service: $($_.Exception.Message)"
        return
    }
    
    # ============================
    # GET ALL WORKSPACES
    # ============================
    try {
        $workspaces = Get-PowerBIWorkspace -All -ErrorAction Stop
    }
    catch {
        Write-Warning "Failed to retrieve workspaces: $($_.Exception.Message)"
        return
    }
    
    foreach ($workspace in $workspaces) {
        Write-Output "`nProcessing workspace: $($workspace.Name) ($($workspace.Id))"
    
        try {
              $datasets = Get-PowerBIDataset -WorkspaceId $workspace.Id -ErrorAction Stop |
        Where-Object {
            (-not $include -or $_.Name -match "(?i)$include") -and
            (-not $exclude -or $_.Name -notmatch "(?i)$exclude")
        }
        }
        catch {
            Write-Warning "Failed to list datasets in workspace $($workspace.Name): $($_.Exception.Message)"
            continue
        }
    
        if ($datasets.Count -eq 0) {
            Write-Output "  No  datasets found. Skipping."
            continue
        }
    
        foreach ($dataset in $datasets) {
            Write-Output "  Processing dataset: $($dataset.Name) ($($dataset.Id))"
    
            $queriedSuccessfully = $false
            $tableErrors = @()
    
            foreach ($tableName in $tablesToTry) {
            $quotedTable = "'$tableName'"
            $columnName  = "$quotedTable[$columnSuffix]"
            $daxQuery    = [string]::Format($daxQueryTemplate, $quotedTable, $columnName)
    
                Write-Output "    Trying DAX: $daxQuery"
                try {
                    $response = Invoke-PowerBIRestMethod `
                        -Url "datasets/$($dataset.Id)/executeQueries" `
                        -Method Post `
                        -Body (@{
                            queries = @(@{ query = $daxQuery })
                            serializerSettings = @{ includeNulls = $true }
                        } | ConvertTo-Json -Depth 5) `
                        -ErrorAction Stop
    
                    $json = $response | ConvertFrom-Json
                    Write-Output "    ✅ Query successful for table $tableName."
                    $json.results[0].tables[0].rows | Format-Table
    
                    $queriedSuccessfully = $true
                    $successfulDatasets += [PSCustomObject]@{
                        Workspace = $workspace.Name
                        Dataset   = $dataset.Name
                        DatasetId = $dataset.Id
                        Table     = $tableName
                        Timestamp = Get-Date
                    }
    
                    break
                }
                catch {
                    $fullMsg = $_.Exception.ToString()
                    if ($fullMsg -match '"value":\s*"([^"]+)"') {
                        $errorMessage = $matches[1]
                    }
                    else {
                        $errorMessage = $_.Exception.Message
                    }
    
                    Write-Warning "    ❌ Failed for table $tableName $errorMessage"
                    $tableErrors += "Table $tableName $errorMessage"
                }
            }
    
            if (-not $queriedSuccessfully) {
                Write-Warning "  Could not query dataset $($dataset.Name) with any table."
                $failedDatasets += [PSCustomObject]@{
                    Workspace = $workspace.Name
                    Dataset   = $dataset.Name
                    DatasetId = $dataset.Id
                    Error     = ($tableErrors -join "; ")
                    Timestamp = Get-Date
                }
            }
    
            # ============================
            # REGISTER USAGE (EXPORT REPORT)
            # ============================
            try {
                $reports = Get-PowerBIReport -WorkspaceId $workspace.Id | Where-Object { $_.DatasetId -eq $dataset.Id }
                if ($reports.Count -gt 0) {
                    $report = $reports[0]  # just pick the first linked report
                    Write-Output "    Triggering usage via ExportTo on report: $($report.Name) ($($report.Id))"
    
                    $null = Invoke-PowerBIRestMethod `
                        -Url "reports/$($report.Id)/ExportTo" `
                        -Method Post `
                        -Body (@{ format = "PDF" } | ConvertTo-Json -Depth 3) `
                        -ErrorAction Stop
    
                    Write-Output "    ✅ Usage registered for dataset $($dataset.Name) via report $($report.Name)."
                    $usageTriggered += [PSCustomObject]@{
                        Workspace = $workspace.Name
                        Dataset   = $dataset.Name
                        Report    = $report.Name
                        Timestamp = Get-Date
                    }
                }
                else {
                    Write-Warning "    ⚠️ No report found linked to dataset $($dataset.Name). Cannot register usage."
                }
            }
            catch {
                Write-Warning "    ❌ Failed to trigger usage for dataset $($dataset.Name): $($_.Exception.Message)"
            }
        }
    }
    
    # ============================
    # REPORT SUCCESSFUL DATASETS
    # ============================
    if ($successfulDatasets.Count -gt 0) {
        Write-Output "`n✅ Successfully queried datasets:"
        $successfulDatasets | Format-Table -AutoSize
    }
    
    # ============================
    # REPORT FAILED DATASETS
    # ============================
    if ($failedDatasets.Count -gt 0) {
        Write-Output "`n❌ Datasets failed to query:"
        $failedDatasets | Format-Table -AutoSize
    }
    
    # ============================
    # REPORT USAGE REGISTRATION
    # ============================
    if ($usageTriggered.Count -gt 0) {
        Write-Output "`n📊 Usage registered for datasets:"
        $usageTriggered | Format-Table -AutoSize
    }
    else {
        Write-Output "`n⚠️ No usage registrations were made."
    }
    

    Once this is running, you won’t need to worry about refresh being paused after 60 days. The script keeps everything ticking over by simulating activity, so your datasets stay active and ready whenever you need them.