claude-code - 💡(How to fix) Fix Process crashes with exit code 3221225477 (0xC0000005 STATUS_ACCESS_VIOLATION) on Windows ARM [2 comments, 2 participants]

Claude Code process exited with code 3221225477

Hex: 0xC0000005 = Windows STATUS_ACCESS_VIOLATION (equivalent to a segfault/memory access violation in the Node.js or native addon layer)

TL;DR

The most likely fix involves addressing the suspected memory pressure or race condition caused by simultaneous MCP server initializations during session startup.

Guidance

• Investigate the startup hook that runs multiple MCP tool initializations in parallel to identify potential memory leaks or synchronization issues.
• Consider implementing a sequential initialization process for MCP servers to reduce memory pressure and avoid potential race conditions.
• Review Node.js and native addon configurations to ensure they are optimized for Windows ARM architecture and can handle the memory requirements of the application.
• Monitor system resources and memory usage during session startup to better understand the conditions leading to the access violation.

Example

No specific code snippet can be provided without more information on the startup hook and MCP server initialization code. However, a general approach to sequential initialization could involve using asynchronous programming techniques, such as Promise.all() or async/await, to ensure that each MCP server initialization completes before the next one begins.

Notes

The issue seems to be specific to Windows ARM devices, which might imply that the problem is related to how Node.js or native addons handle memory on this architecture. Further investigation into ARM-specific memory behavior and potential differences in how memory is allocated and deallocated compared to other architectures may be necessary.

Recommendation

Apply a workaround by modifying the startup hook to initialize MCP servers sequentially, as this approach directly addresses the suspected cause of the issue and may provide a temporary solution until a more comprehensive fix can be implemented.