Sidecar crashes repeatedly on Windows (exit code 1 + ACCESS_VIOLATION) - v1.15.3/v1.15.4

[guiren88]

Description

OpenCode Desktop Sidecar Crash Log

Environment

• OS: Windows (x64)
• OpenCode Desktop: v1.15.3 → v1.15.4 (both affected)
• Node.js: v24.14.1

Crash Summary (v1.15.4, 2026-05-18)

08:55:02 [warn]  sidecar exited { code: 3221225477 }  ← ACCESS_VIOLATION
08:57:29 [warn]  sidecar exited { code: 1 }
08:59:57 [warn]  sidecar exited { code: 1 }
09:08:02 [warn]  sidecar exited { code: 1 }
09:12:11 [warn]  sidecar exited { code: 1 }
09:13:08 [warn]  sidecar exited { code: 1 }
10:17:41 [warn]  sidecar exited { code: 1 }
10:31:05 [warn]  sidecar exited { code: 1 }
10:33:13 [warn]  sidecar exited { code: 1 }
10:35:24 [warn]  sidecar exited { code: 1 }
10:41:55 [warn]  sidecar exited { code: 1 }
10:45:59 [warn]  sidecar exited { code: 1 }
10:48:01 [warn]  sidecar exited { code: 1 }
10:58:13 [warn]  sidecar exited { code: 1 }
10:59:07 [warn]  sidecar exited { code: 1 }
11:00:14 [warn]  sidecar exited { code: 1 }
11:02:54 [warn]  sidecar exited { code: 1 }
11:04:11 [warn]  sidecar exited { code: 1 }

Total: 18 crashes in ~2.5 hours on v1.15.4

Error 1: node-pty AttachConsole failed

[2026-05-18 10:17:41] [warn] sidecar stderr {
  message: 'C:\\Users\\sy\\AppData\\Local\\Programs\\@opencode-aidesktop\\resources\\app.asar\\node_modules\\@lydell\\node-pty-win32-x64\\lib\\conpty_console_list_agent.js:13\r\n' +
    'var consoleProcessList = getConsoleProcessList(shellPid);\r\n' +
    '                         ^\r\n' +
    '\r\n' +
    'Error: AttachConsole failed\r\n' +
    '    at Object.<anonymous> (conpty_console_list_agent.js:13:26)\r\n' +
    '    at Module._compile (node:internal/modules/cjs/loader:1820:14)\r\n' +
    '    at Module._extensions..js (node:internal/modules/cjs/loader:1953:10)\r\n' +
    '    at Module.load (node:internal/modules/cjs/loader:1540:32)\r\n' +
    '    at Module._load (node:internal/modules/cjs/loader:1342:12)\r\n' +
    '    at c._load (node:electron/js2c/node_init:2:18060)\r\n' +
    '    at wrapModuleLoad (node:internal/modules/cjs/loader:262:19)\r\n' +
    '    at Module.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:169:5)\r\n' +
    '    at node:internal/main/run_main_module:33:47\r\n' +
    '\r\n' +
    'Node.js v24.14.1'
}

Error 2: SQLite experimental warning (every startup)

(node:XXXX) ExperimentalWarning: SQLite is an experimental feature and might change at any time
(Use `OpenCode --trace-warnings ...` to show where the warning was created)

Error 3: Network failures (v1.15.3, 2026-05-17)

[2026-05-17 10:27:29] [error] Error: Error: net::ERR_FAILED
    at SimpleURLLoaderWrapper.<anonymous> (node:electron/js2c/browser_init:2:134327)
    at SimpleURLLoaderWrapper.emit (node:events:508:28)
[2026-05-17 10:27:29] [error] update check failed Error: net::ERR_FAILED

Full Log Location

C:\Users\sy\AppData\Roaming\@opencode-ai\desktop\logs\main.log

Plugins

None (default installation)

OpenCode version

v1.15.4 (also affected in v1.15.3)

Steps to reproduce

1. Launch OpenCode Desktop
2. Wait 30 seconds to 2 minutes
3. Sidecar crashes automatically with exit code 1
4. App restarts and cycle repeats

Screenshot and/or share link

No response

Operating System

Windows 11 x64

Terminal

No response

[github-actions]

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

• After upgrading the desktop program to version 1.15.3, there is a high probability that the local service will automatically go offline. #28045: Similar symptom — sidecar going offline automatically on v1.15.3, Windows 11
• Sidecar crashes with STATUS_STACK_BUFFER_OVERRUN (0xC0000409) on Windows with CJK paths #29033: Related — sidecar crashes repeatedly on Windows (different exit code 0xC0000409 / STATUS_STACK_BUFFER_OVERRUN, but similar crash pattern)
• [Bug] Sidecar crashes with exit code 3221226505 (0xC0000409) on Windows - causes local server to go offline #28413: Closed issue — sidecar crashes with exit code 3221226505 on Windows

If your issue is distinct (different root cause, different trigger), please clarify what distinguishes it from the above.