OpenCode Desktop starts multiple windows when launched once from a script #7085

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1. github-actions

   assigned

   adamdotdevin

   on Jan 6, 2026
2. github-actions

   added

   webRelates to opencode on web / desktopRelates to opencode on web / desktop

   windows

   on Jan 6, 2026
3. github-actions commented on Jan 6, 2026

   

   github-actionsBot

   on Jan 6, 2026 – with GitHub Actions

   Contributor

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   This issue might be a duplicate of existing issues. Please check:

   • Bug: Desktop app opens multiple windows on startup (Windows) #6965: Bug: Desktop app opens multiple windows on startup (Windows)

   Both issues report the same core problem: OpenCode Desktop opening multiple windows on Windows when launched once, due to a missing single-instance guard. The root cause and proposed fix are identical (lacking single-instance protection).

   Feel free to ignore if this doesn't match your specific case.
4. andrey-golovko commented on Jan 6, 2026

   

   andrey-golovko

   on Jan 6, 2026

   Author

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   Solution. Remove proxies if you don't need them.

   # OpenCode Desktop bootstrap (single-instance launcher)
   # - global mutex to prevent double-run -> prevents multiple windows
   # - proxy + no_proxy
   # - bootstrap: opencode-cli serve --port 4096 (headless)
   # - start Desktop only once
   # - wait a bit, then kill ONLY bootstrap process tree
   # ============================
   
   Set-StrictMode -Version Latest
   $ErrorActionPreference = "Stop"
   
   $DesktopExe = "$env:LOCALAPPDATA\OpenCode\OpenCode.exe"
   $CliExe     = "$env:LOCALAPPDATA\OpenCode\opencode-cli.exe"
   
   $BootstrapPort = 4096
   $HostName      = "127.0.0.1"
   $ProjectPath   = "C:\Code\sever\crm"
   
   # ---------- Global mutex (critical) ----------
   $mutexName = "Global\OpenCodeDesktopLauncherSingleton"
   $mutex = New-Object System.Threading.Mutex($false, $mutexName)
   
   if (-not $mutex.WaitOne(0, $false)) {
     # another launcher instance is running
     exit 0
   }
   
   try {
     # ---------- sanity ----------
     if (!(Test-Path $DesktopExe)) { throw "OpenCode.exe not found: $DesktopExe" }
     if (!(Test-Path $CliExe))     { throw "opencode-cli.exe not found: $CliExe" }
   
     # ---------- proxy ----------
     $proxy = "http://127.0.0.1:8118"
     $env:HTTP_PROXY  = $proxy
     $env:HTTPS_PROXY = $proxy
     $env:http_proxy  = $proxy
     $env:https_proxy = $proxy
   
     $no = @(
       "localhost",
       "127.0.0.1",
       "tauri.localhost",
       ".localhost",
       "::1",
       "localhost:$BootstrapPort",
       "127.0.0.1:$BootstrapPort",
       "localhost:0",
       "127.0.0.1/8",
       "10.0.0.0/8",
       "172.16.0.0/12",
       "192.168.0.0/16"
     ) -join ","
     $env:NO_PROXY = $no
     $env:no_proxy = $no
   
     function Get-ProcessTree {
       param([int]$RootPid)
       $children = Get-CimInstance Win32_Process | Where-Object { $_.ParentProcessId -eq $RootPid }
       foreach ($c in $children) { $c; Get-ProcessTree -RootPid $c.ProcessId }
     }
   
     # ---------- 1) Start bootstrap serve:4096 (headless, no browser) ----------
     $bootstrap = Get-CimInstance Win32_Process |
       Where-Object {
         $_.Name -eq "opencode-cli.exe" -and
         $_.CommandLine -match "serve\s+--port\s+$BootstrapPort\b"
       } |
       Select-Object -First 1
   
     if (-not $bootstrap) {
       Start-Process -FilePath $CliExe `
         -ArgumentList @("serve","--port",$BootstrapPort,"--hostname",$HostName) `
         -WindowStyle Hidden | Out-Null
     }
   
     # ---------- 2) Start Desktop ONLY if not running ----------
     if (-not (Get-Process -Name "OpenCode" -ErrorAction SilentlyContinue)) {
       Start-Process -FilePath $DesktopExe `
         -ArgumentList @($ProjectPath) `
         -WorkingDirectory (Split-Path $DesktopExe) | Out-Null
     }
   
     # ---------- 3) Give Desktop time to fully start ----------
     Start-Sleep -Seconds 15
   
     # ---------- 4) Kill ONLY bootstrap tree (strict match by port) ----------
     $bootstrap = Get-CimInstance Win32_Process |
       Where-Object {
         $_.Name -eq "opencode-cli.exe" -and
         $_.CommandLine -match "serve\s+--port\s+$BootstrapPort\b"
       } |
       Select-Object -First 1
   
     if ($bootstrap) {
       $tree = @(Get-ProcessTree -RootPid $bootstrap.ProcessId)
   
       foreach ($p in ($tree | Sort-Object ProcessId -Descending)) {
         try { Stop-Process -Id $p.ProcessId -Force -ErrorAction SilentlyContinue } catch {}
       }
       try { Stop-Process -Id $bootstrap.ProcessId -Force -ErrorAction SilentlyContinue } catch {}
     }
   
   } finally {
     try { $mutex.ReleaseMutex() | Out-Null } catch {}
     $mutex.Dispose()
   }
   
5. umirza-geo commented on Feb 18, 2026

   

   umirza-geo

   on Feb 18, 2026

   More actions

   Hi @andrey-golovko ,
   Your solution didn't work on my Windows machine. FYI
6. github-actions commented on Apr 20, 2026

   

   github-actionsBot

   on Apr 20, 2026 – with GitHub Actions

   Contributor

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   To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
7. github-actions

   closed this as completedon Apr 20, 2026