MayaCharm连接Maya遭拒绝求助：首次可用后续报错Connection to Maya refused

Hey Eva, sorry to hear you’re stuck with this connection error—let’s work through some straightforward fixes that usually resolve this issue:

• Verify the MayaCharm server is running in Maya
  Open Maya’s Script Editor, paste this command, and run it:

  import mayacharm; mayacharm.start_server()
  

  If the server crashed or didn’t start automatically, this will kick it back up. Keep an eye on the Script Editor for any additional errors here—if you see one, the plugin might not be loaded properly.

• Double-check PyCharm’s connection settings
  Head to PyCharm’s Settings/Preferences → Tools → MayaCharm. Make sure:

  • The path to your Maya installation is correct (no typos, and it points to the exact version you’re using)
  • The port number (default is 7001) isn’t being used by another program. To check:
    • Windows: Open Command Prompt and run netstat -ano | findstr :7001
    • macOS/Linux: Open Terminal and run lsof -i :7001
      If the port is occupied, change it to something like 7002—just make sure you update the same port number in both PyCharm and Maya’s MayaCharm settings.

• Fix permission or firewall conflicts

  • Make sure both Maya and PyCharm are running with the same permissions (e.g., both as your regular user, or both as administrator—mixing them can block connections)
  • Temporarily disable your firewall to test if it’s blocking the connection. If that works, add exceptions for both Maya and PyCharm in your firewall settings so they can communicate freely.

• Reload the MayaCharm plugin in Maya
  Go to Window → Settings/Preferences → Plug-in Manager, find the MayaCharm plugin, uncheck it, restart Maya, then recheck it to reload. This clears any cached plugin issues that might be causing the connection failure.

• Check version compatibility
  Ensure your MayaCharm plugin version matches your Maya and PyCharm versions. Older MayaCharm builds might not support the latest PyCharm releases, and vice versa. Try updating the plugin through PyCharm’s Plugin Marketplace, or roll back to a version listed as compatible with your software stack.

If none of these steps work, try fully uninstalling the MayaCharm plugin from PyCharm, then reinstall it. You can also clear PyCharm’s cache by going to File → Invalidate Caches..., checking "Clear file system cache and local history", and restarting PyCharm.

内容的提问来源于stack exchange，提问作者Eva