Command execution failed on Windows

[kabutohui]

• Platform: Windows
• Problem: command execution failed
• Error information:

{"content":[{"type":"text","text":"{\"error\":true,\"message\":\"Failed to get display information on Windows: Command execution failed: Command failed: powershell -WindowStyle Hidden -NonInteractive -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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\\n\",\"tool\":\"get_displays\"}"}]}

[hqhq1025]

Thanks for the report.

We've made significant improvements to Windows command execution in recent releases, including fixes for PowerShell display info queries and sandbox tool execution hardening.

Please try the latest version:
https://github.com/OpenCoworkAI/open-cowork/releases/tag/v3.3.0-beta.8

If you still encounter this error, please share the full error log so we can investigate the specific command that fails.

[github-actions]

Thanks for the report. I checked the current codebase, and the error you pasted matches the Windows get_displays path used by the GUI operation MCP server.

On Windows, get_displays runs an embedded PowerShell command with -EncodedCommand, loads System.Windows.Forms, reads [System.Windows.Forms.Screen]::AllScreens, and converts the result to JSON. If that PowerShell step fails, the current code raises Failed to get display information on Windows: .... I did not find a separate Windows fallback path in this code path.

Relevant code:

• src/main/mcp/gui-operate-server.ts:1812 - executePowerShell() runs powershell with -WindowStyle Hidden, -NonInteractive, and -EncodedCommand
• src/main/mcp/gui-operate-server.ts:1986 - windowsGetDisplayConfiguration() loads System.Windows.Forms, calls [System.Windows.Forms.Screen]::AllScreens, and serializes the display list
• src/main/mcp/gui-operate-server.ts:2745 - Windows errors from display detection are wrapped as Failed to get display information on Windows: ...
• src/main/mcp/gui-operate-server.ts:6075 - get_displays is the exposed GUI tool for reading monitor information
• src/main/mcp/gui-operate-server.ts:6491 - get_displays calls getDisplayConfiguration() directly

Need more info:

• What Open Cowork version are you using?
• Does this happen as soon as a GUI-related task starts, or only after a specific action?
• Are you using a single monitor or multiple monitors, and what display scaling is set in Windows?
• Please paste the app log lines around this error, especially any PowerShell stderr output.

---

Open Cowork Bot

[Sun-sunshine06]

Thanks for the follow-up. This issue is not ready to close yet.\n\nRight now we only have the top-level wrapped error (Failed to get display information on Windows ...), but we still do not have the underlying PowerShell stderr / app log lines that would tell us which step is actually failing. In the current code path, get_displays still goes through the Windows PowerShell display-detection flow, so that missing detail matters for narrowing this down.\n\nCould you please confirm whether this still reproduces on �3.3.0-beta.8 or newer, and share the following if it does:\n\n- exact Open Cowork version/build\n- whether it happens immediately when a GUI task starts, or only after a specific action\n- single monitor or multiple monitors, and the Windows display scaling for each monitor\n- the surrounding app log lines, especially the PowerShell stderr output\n- Windows version and whether this is happening in a remote/RDP/VM session\n\nOnce we have that, we can tell whether this is the same display-enumeration failure path or a different Windows environment issue.

[hqhq1025]

This was reported on an early beta. Windows command execution (including PowerShell display info queries and sandbox tool execution) has been significantly improved across beta.3–beta.9.

No further response from the reporter after being asked to upgrade and provide logs. Closing as likely resolved. Please reopen with latest logs if the issue persists.