Claude Code VSCode Notifications Are Broken — Here's My Windows Workaround

Even as someone with only a very loose understanding of web technologies, I was able to ship a real business tool to users around the world in just one week — while even taking security into account.

Lately, that has honestly made me feel like people who can only do technical implementation may gradually become unnecessary... and it’s kind of terrifying.

The tool that made this possible was ClaudeCode.

However, while using it, the one thing that kept bothering me was this:

I wouldn’t notice when processing had finished, and would just leave it sitting there
ClaudeCode would ask “Do you want to run this command?”, but I wouldn’t notice the prompt and would again leave it sitting there

That wasted idle time felt like such a waste!

So I decided to set things up so that sounds would play and notifications would appear when:

processing finishes
a confirmation dialog appears

My environment was:

Windows11 + VS Code (ClaudeCode Extension V2.1.143)

However, this can also be used in the CLI version as well
(if anything, the CLI version makes refresh behavior easier to understand).

📌Play a Sound When Processing Finishes

ClaudeCode allows you to hook into several events and execute custom commands.

The following example runs hooks/complete.ps1 (a PowerShell script) when processing finishes.

📄settings.json

Without removing your existing settings, add the following.

We’ll also add PreToolUse and PostToolUse here since they’ll be used later.

C:/Users/[user]/.claude/settings.json

{
  "hooks": {
    "Stop": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "powershell.exe -ExecutionPolicy Bypass -File C:/Users/[user]/.claude/hooks/complete.ps1"
          }
        ]
      }
    ],
    "PreToolUse": [
      {
        "matcher": "Bash|Edit|Write|MultiEdit|NotebookEdit",
        "hooks": [
          {
            "type": "command",
            "command": "powershell.exe -ExecutionPolicy Bypass -File C:/Users/[user]/.claude/hooks/pretool-resolve.ps1"
          }
        ]
      }
    ],
    "PostToolUse": [
      {
        "matcher": "Bash|Edit|Write|MultiEdit|NotebookEdit",
        "hooks": [
          {
            "type": "command",
            "command": "powershell.exe -ExecutionPolicy Bypass -File C:/Users/[user]/.claude/hooks/posttool-resolve.ps1"
          }
        ]
      }
    ]
  }
}

Note

Replace [user] with your own username.
(There are 3 occurrences in the settings.json example above.)

Path separators were only recognized when using / (forward slashes).
(Confirmed with ClaudeCode 2.1.143. Older versions may behave differently.)

📄PowerShell Scripts

📄config.ps1

config.ps1 is a configuration file
(for things like the paths to the sounds you want to play).

We’ll need it later as well, so create it first.

⚠️ Warning
Any .ps1 file containing Japanese text must be saved as UTF-8 with BOM.
Without BOM, Japanese characters become corrupted and the hooks will fail to run properly.
(This is a Windows PowerShell 5.1 limitation.)

# Adjust these paths for your environment

$SoundDir = "D:\sound"

$SoundPermission = Join-Path $SoundDir "notify.wav"
$SoundComplete   = Join-Path $SoundDir "complete.wav"

$DelayMs = 700

📄complete.ps1

This script runs whenever one Claude turn finishes.

It:

shows a Windows notification
plays a completion sound
writes debug logs
rotates logs automatically

The script is longer than strictly necessary because I wanted it to remain stable during long-term usage.

C:/Users/[user]/.claude/hooks/complete.ps1

$log = "$env:USERPROFILE\.claude\hooks\hook-debug.log"
$cfg = "$env:USERPROFILE\.claude\hooks\config.ps1"

function Write-Log {
    param([string]$Message)
    "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') $Message" |
        Out-File -FilePath $log -Append -Encoding utf8
}

function Invoke-LogRotation {
    try {
        $fi = Get-Item -LiteralPath $log -ErrorAction Stop
        if ($fi.Length -le 50KB) { return }

        $lines = @(Get-Content -LiteralPath $log -Encoding UTF8)
        $kept  = New-Object System.Collections.Generic.List[string]
        $bytes = 0
        for ($i = $lines.Count - 1; $i -ge 0; $i--) {
            $lineBytes = [System.Text.Encoding]::UTF8.GetByteCount($lines[$i]) + 2
            if ($bytes + $lineBytes -gt 15KB -and $kept.Count -gt 0) { break }
            $kept.Insert(0, $lines[$i])
            $bytes += $lineBytes
        }
        $stamp = Get-Date -Format 'yyyy-MM-dd HH:mm:ss'
        $kept.Insert(0, "--- log trimmed $stamp (was $([int]$fi.Length) bytes) ---")

        $tmp = "$log.tmp"
        Set-Content -LiteralPath $tmp -Value $kept -Encoding UTF8
        Move-Item -LiteralPath $tmp -Destination $log -Force
    } catch { }
}

function Get-CompletionSound {
    if (Test-Path -LiteralPath $cfg) {
        try { . $cfg } catch { }
    }
    return $SoundComplete
}

function Show-CompletionToast {
    try {
        Add-Type -AssemblyName System.Windows.Forms
        Add-Type -AssemblyName System.Drawing
        $icon = New-Object System.Windows.Forms.NotifyIcon
        $icon.Icon    = [System.Drawing.SystemIcons]::Information
        $icon.Visible = $true
        $icon.ShowBalloonTip(5000, "Claude Code", "Task completed", [System.Windows.Forms.ToolTipIcon]::Info)
        Write-Log "toast shown OK"
        return $icon
    } catch {
        Write-Log "ERROR(toast): $_"
        return $null
    }
}

function Invoke-CompletionNotice {
    param([string]$SoundPath)

    $icon = $null
    try {
        Add-Type -AssemblyName PresentationCore
        $mp = New-Object System.Windows.Media.MediaPlayer
        $mp.Volume = 1.0
        $mp.Open([System.Uri]::new($SoundPath))

        $waited = 0
        while (-not $mp.NaturalDuration.HasTimeSpan -and $waited -lt 3000) {
            Start-Sleep -Milliseconds 100
            $waited += 100
        }
        if ($mp.NaturalDuration.HasTimeSpan) {
            $durMs = [int]$mp.NaturalDuration.TimeSpan.TotalMilliseconds
        } else {
            $durMs = 6000
        }

        $icon = Show-CompletionToast

        $mp.Play()
        Start-Sleep -Milliseconds ($durMs + 200)
        $mp.Stop()
        $mp.Close()
        Write-Log "sound played OK (dur=${durMs}ms)"
    } catch {
        Write-Log "ERROR(sound): $_"
    } finally {
        if ($null -ne $icon) {
            try { $icon.Dispose() } catch {}
        }
    }
}

Write-Log "Stop hook fired (PID=$PID, Session=$((Get-Process -Id $PID).SessionId))"
Invoke-LogRotation
$snd = Get-CompletionSound
if ($snd) {
    Invoke-CompletionNotice -SoundPath $snd
} else {
    Write-Log 'ERROR: not found $SoundComplete in config.ps1'
}

Refreshing the Settings

Even if you configured everything correctly, if the sound still does not play for some reason, you may need to refresh the settings depending on your ClaudeCode version.

Recommended Method

Close the ClaudeCode window once
Run Ctrl + Shift + P > Developer: Reload Window
Open a new ClaudeCode window
Give it any instruction and confirm that sound + notification appear when it finishes

If It Still Does Not Work (Last Resort)

Close ClaudeCode and VSCode
Open C:\Users\[user]\.claude.json in Notepad or another editor
Find the folder you had open in VSCode, clear its lastSessionId, and save the file
Restart VSCode

Things That Seem Like They Would Refresh It, But Did Not

The following are things I tried, but they did not refresh the settings:

Pressing the + button in the upper-right corner of the ClaudeCode window to open a new window
Simply restarting VSCode
Simply restarting the PC

📌 Play a Sound for Permission Dialogs

Those dialogs that keep popping up and asking you to click Yes are easy to leave unattended.

I wanted to play a sound when they appeared, but unfortunately, in VSCode + ClaudeCode, the Notification setting currently does not seem to work properly.

(This is also mentioned in GitHub issues, and it seems to have remained broken since 2.0.8. Incidentally, it does work in the CLI.)

So I decided to implement it using a slightly hacky workaround.

The idea is to hook both the event before a tool runs (such as a bash command) and the event after it runs, then play a sound based on the following logic:

If the pre-execution event fires, but the post-execution event still has not fired after X msec, assume that a dialog is being shown → 🔊Play sound!

Note
The simplest approach would be to play a sound unconditionally whenever the pre-execution event fires.
However, that would also play sounds for commands that run without showing a dialog, which is why this ended up being such a roundabout solution...

📄PowerShell Scripts

📄pretool-resolve.ps1

C:/Users/[user]/.claude/hooks/pretool-resolve.ps1

$log     = "$env:USERPROFILE\.claude\hooks\hook-debug.log"
$cfg     = "$env:USERPROFILE\.claude\hooks\config.ps1"
$delayed = "$env:USERPROFILE\.claude\hooks\delayed-sound.ps1"
$pendDir = "$env:USERPROFILE\.claude\hooks\pending"

function Write-Log {
    param([string]$Message)
    "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') $Message" |
        Out-File -FilePath $log -Append -Encoding utf8
}

if (Test-Path -LiteralPath $cfg) {
    try { . $cfg } catch { }
}
$sound = $SoundPermission
if (-not $sound) {
    Write-Log 'ERROR: not found $SoundPermission in config.ps1'
    exit 0
}
$delayMs = if ($DelayMs) { [int]$DelayMs } else { 700 }

function Read-HookInput {
    $stdin = [Console]::OpenStandardInput()
    $ms    = New-Object System.IO.MemoryStream
    $stdin.CopyTo($ms)
    $raw   = [System.Text.Encoding]::UTF8.GetString($ms.ToArray())
    return ($raw | ConvertFrom-Json)
}

function Get-AllowPatterns {
    param([string]$Cwd)

    $allow = New-Object System.Collections.Generic.List[string]
    $files = @(
        (Join-Path $env:USERPROFILE ".claude\settings.json"),
        (Join-Path $Cwd ".claude\settings.json"),
        (Join-Path $Cwd ".claude\settings.local.json")
    )
    foreach ($f in $files) {
        if ($f -and (Test-Path -LiteralPath $f)) {
            try {
                $s = Get-Content -Raw -LiteralPath $f | ConvertFrom-Json
                if ($s.permissions -and $s.permissions.allow) {
                    foreach ($a in $s.permissions.allow) { $allow.Add([string]$a) }
                }
            } catch { }
        }
    }
    return $allow
}

function Test-NeedsPermission {
    param($Tool, $Json, $Allow)

    if ($Tool -eq "Bash") {
        $cmd = [string]$Json.tool_input.command
        if ($null -ne $cmd) { $cmd = $cmd.Trim() }
        foreach ($p in $Allow) {
            $m = [regex]::Match($p, '^Bash\((.+)\)$')
            if (-not $m.Success) { continue }
            $inner = $m.Groups[1].Value
            if ($inner -eq '*') {
                return $false
            } elseif ($inner.EndsWith(' *')) {
                $prefix = $inner.Substring(0, $inner.Length - 2)
                if ($cmd -eq $prefix -or $cmd.StartsWith($prefix + ' ')) { return $false }
            } else {
                if ($cmd -eq $inner) { return $false }
            }
        }
        return $true
    }

    foreach ($p in $Allow) {
        if ($p -eq $Tool -or $p -eq ($Tool + '(*)')) { return $false }
    }
    return $true
}

function Start-PendingSound {
    param([string]$RawId, [string]$Tool)

    $id = if ([string]::IsNullOrEmpty($RawId)) { [guid]::NewGuid().ToString() } else { $RawId }
    $id = ($id -replace '[^A-Za-z0-9_\-]', '_')

    if (-not (Test-Path -LiteralPath $pendDir)) {
        New-Item -ItemType Directory -Force -Path $pendDir | Out-Null
    }
    $pf = Join-Path $pendDir $id
    Get-Date -Format 'yyyy-MM-dd HH:mm:ss' | Out-File -FilePath $pf -Encoding utf8
    Write-Log "PreToolUse pending: $Tool id=$id"

    Start-Process -FilePath "powershell.exe" `
        -ArgumentList @('-NoProfile', '-ExecutionPolicy', 'Bypass', '-File', "`"$delayed`"", '-Pending', "`"$pf`"", '-Sound', "`"$sound`"", '-DelayMs', $delayMs, '-Id', $id) `
        -WindowStyle Hidden | Out-Null
}

try {
    $j     = Read-HookInput
    $tool  = [string]$j.tool_name
    $cwd   = [string]$j.cwd
    $allow = Get-AllowPatterns -Cwd $cwd

    if (Test-NeedsPermission -Tool $tool -Json $j -Allow $allow) {
        Start-PendingSound -RawId ([string]$j.tool_use_id) -Tool $tool
    }
} catch {
    Write-Log "ERROR(pretool): $_"
}

exit 0

📄posttool-resolve.ps1

C:/Users/[user]/.claude/hooks/posttool-resolve.ps1

$log     = "$env:USERPROFILE\.claude\hooks\hook-debug.log"
$pendDir = "$env:USERPROFILE\.claude\hooks\pending"

function Write-Log {
    param([string]$Message)
    "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') $Message" |
        Out-File -FilePath $log -Append -Encoding utf8
}

function Read-HookInput {
    $stdin = [Console]::OpenStandardInput()
    $ms    = New-Object System.IO.MemoryStream
    $stdin.CopyTo($ms)
    $raw   = [System.Text.Encoding]::UTF8.GetString($ms.ToArray())
    return ($raw | ConvertFrom-Json)
}

function ConvertTo-SafeId {
    param([string]$Id)
    return ($Id -replace '[^A-Za-z0-9_\-]', '_')
}

function Remove-ResolvedMarker {
    param([string]$RawId)
    if ([string]::IsNullOrEmpty($RawId)) { return }
    $id = ConvertTo-SafeId $RawId
    $pf = Join-Path $pendDir $id
    if (Test-Path -LiteralPath $pf) {
        Remove-Item -LiteralPath $pf -Force -ErrorAction SilentlyContinue
        Write-Log "PostToolUse resolved (no dialog) id=$id"
    }
}

function Clear-OrphanMarkers {
    if (-not (Test-Path -LiteralPath $pendDir)) { return }
    Get-ChildItem -LiteralPath $pendDir -File -ErrorAction SilentlyContinue |
        Where-Object { $_.LastWriteTime -lt (Get-Date).AddSeconds(-120) } |
        ForEach-Object { Remove-Item -LiteralPath $_.FullName -Force -ErrorAction SilentlyContinue }
}

try {
    $j = Read-HookInput
    Remove-ResolvedMarker -RawId ([string]$j.tool_use_id)
    Clear-OrphanMarkers
} catch {
    Write-Log "ERROR(posttool): $_"
}

exit 0

📄delayed-sound.ps1

C:/Users/[user]/.claude/hooks/delayed-sound.ps1

param(
    [Parameter(Mandatory = $true)][string]$Pending,
    [Parameter(Mandatory = $true)][string]$Sound,
    [Parameter(Mandatory = $true)][int]$DelayMs,
    [string]$Id = ""
)

$log = "$env:USERPROFILE\.claude\hooks\hook-debug.log"

function Write-Log {
    param([string]$Message)
    "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') $Message" |
        Out-File -FilePath $log -Append -Encoding utf8
}

function Play-Wav {
    param([string]$Path)

    Add-Type -AssemblyName PresentationCore
    $mp = New-Object System.Windows.Media.MediaPlayer
    $mp.Volume = 1.0
    $mp.Open([System.Uri]::new($Path))

    $waited = 0
    while (-not $mp.NaturalDuration.HasTimeSpan -and $waited -lt 3000) {
        Start-Sleep -Milliseconds 100
        $waited += 100
    }
    if ($mp.NaturalDuration.HasTimeSpan) {
        $durMs = [int]$mp.NaturalDuration.TimeSpan.TotalMilliseconds
    } else {
        $durMs = 4000
    }

    $mp.Play()
    Start-Sleep -Milliseconds ($durMs + 200)
    $mp.Stop()
    $mp.Close()
    return $durMs
}

try {
    Start-Sleep -Milliseconds $DelayMs

    if (-not (Test-Path -LiteralPath $Pending)) {
        Write-Log "delayed-sound SKIPPED (auto-approved, no dialog) id=$Id"
        return
    }

    try { Remove-Item -LiteralPath $Pending -Force -ErrorAction Stop } catch {}
    Write-Log "delayed-sound PLAYED (dialog shown) id=$Id"

    $durMs = Play-Wav -Path $Sound
    Write-Log "delayed-sound OK (dur=${durMs}ms) id=$Id"
} catch {
    Write-Log "ERROR(delayed-sound): $_"
}

How It Works

① Route Where a Dialog Appears

Before executing a command that requires dialog confirmation, pretool-resolve.ps1 runs.

⭕ Create a log file in pending/ using the current tool call ID
↓
🎯 Dialog is being shown...
↓
After the command is executed, posttool-resolve.ps1 runs.

❌ If a log file for the current tool call ID exists in pending/, delete it.

② Route Where No Dialog Appears

Since no dialog appears, the log file is deleted immediately after it is created.

Before executing a command that may require dialog confirmation, pretool-resolve.ps1 runs.

⭕ Create a log file in pending/ using the current tool call ID
↓
After the command is executed, posttool-resolve.ps1 runs.

❌ If a log file for the current tool call ID exists in pending/, delete it immediately.

Note
pending/ is created automatically.

🔊 delayed-sound.ps1: Playing the Sound

delayed-sound.ps1 plays a sound if the log file for the current tool call ID still exists in pending/ after X msec.

In case ①, the dialog is shown, so the log file still exists after X msec → 🔊 play sound
In case ②, the log file is deleted immediately, so it no longer exists after X msec → no sound

This method has one weakness: if the command itself takes X msec or longer to execute, the sound may play even in case ②.

If sounds keep playing even when no dialog is shown, increase $DelayMs in config.ps1 to adjust the timing.

📌Conclusion

A few additional notes:

Since the target environment is Windows PowerShell 5.1, save the files as UTF-8 with BOM
Windows 11 notification settings, such as Focus Assist, may prevent notifications from appearing

I have barely used PowerShell myself, so this was almost entirely done with ClaudeCode.

Depending on your Windows environment, you may need to modify the code.

The PowerShell scripts include error logging, log rotation, and other defensive features, so they may contain extra code if you only want to use the core functionality. Feel free to cut anything you do not need.

推荐订阅源

DEV Community

📌Play a Sound When Processing Finishes

📄settings.json

📄PowerShell Scripts

📄config.ps1

📄complete.ps1

Refreshing the Settings

Recommended Method

If It Still Does Not Work (Last Resort)

Things That Seem Like They Would Refresh It, But Did Not

📌 Play a Sound for Permission Dialogs

📄PowerShell Scripts

📄pretool-resolve.ps1

📄posttool-resolve.ps1

📄delayed-sound.ps1

How It Works

① Route Where a Dialog Appears

② Route Where No Dialog Appears

🔊 delayed-sound.ps1: Playing the Sound

📌Conclusion