Download and install .Net Desktop Runtime for AI Desktop Actions

  • Release version: Australia
  • Updated May 25, 2026
  • 1 minute to read
  • Reduce setup time and prevent installation errors by downloading and installing .Net Desktop Runtime following the instructions.

    Before you begin

    Ensure that you have installed the AI Desktop Actions MSI. For more information, see Download AI Desktop Actions installer.

    Role required: admin

    About this task

    The AI Desktop Actions installer guides you through installation of .NET Desktop Runtime during the setup.

    Procedure

    1. Copy the following script to your clipboard.
      Write-Host "--- Initializing Agentic Environment Setup ---" -ForegroundColor Cyan
      $ErrorActionPreference = "Stop"
      
      $downloadUrl = "https://dot.net/v1/dotnet-install.ps1"
      $workingDir = $PSScriptRoot
      $scriptPath = Join-Path $workingDir "dotnet-install.ps1"
      
      try {
          Write-Host "[1/3] Downloading official Microsoft installer..." -ForegroundColor Yellow
          Invoke-WebRequest -Uri $downloadUrl -OutFile $scriptPath
      
          Write-Host "[2/3] Installing .NET 9.0.10..." -ForegroundColor Yellow
          Set-Location $workingDir
      
          & .\dotnet-install.ps1 `
              -Architecture x64 `
              -InstallDir "C:\Program Files\dotnet\" `
              -Runtime windowsdesktop `
              -Version 9.0.10
      
          & .\dotnet-install.ps1 `
              -Architecture x64 `
              -InstallDir "C:\Program Files\dotnet\" `
              -Runtime dotnet `
              -Version 9.0.10
      
          Write-Host ""
          Write-Host "--- SUCCESS: System is ready for Agentic Desktop ---" -ForegroundColor Green
      }
      catch {
          Write-Host ""
          Write-Host "--- ERROR: Installation failed ---" -ForegroundColor Red
          Write-Host $_.Exception.Message -ForegroundColor Red
      }
      
      Write-Host ""
      Write-Host "Press any key to exit..."
      $null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
       
    2. Paste the script in any text editor.
    3. Save the file with a .ps1 extension.
      1. Select File > Save As.
      2. In the File name field, enter a name and save the file with a .ps1 extension.
        Example: myscript.ps1
      3. Set Save as type to All Files (.).
      4. Choose a location such as Documents or Desktop.
      5. Select Save.
    4. Run the script in Windows PowerShell.
      1. Select Start.
      2. Search for Windows PowerShell.
      3. Select Run as administrator.
      4. Use the cd command to move to the folder where you saved the script.
        Example:
        cd C:\Users\YourName\Documents
      5. Run the script by entering the following command.
        Example:
        .\myscript.ps1

    Result

    .NET Desktop Runtime is downloaded and installed on your system.

    What to do next

    Use AI Desktop Actions to design desktop actions. For more information, see Defined path desktop actions in AI Desktop Actions.