Troubleshooting hub
Claude Code fixes
Native Windows, Desktop, Store builds, plugins, and local MCP startup failures.
4 exact-error pages100% source-linked
Confirmed workaround
Fix Claude Code MCP “spawn npx ENOENT” on Windows
SPAWN ERROR: ENOENT spawn npx ENOENTOn native Windows, route NPX through cmd.exe. A reporter confirmed the change connected six official plugin MCPs, including Context7 and Playwright.
5 min
Open issue
Claude Desktop MCP “UtilityProcess spawn timeout” on Windows
MCP X: UtilityProcess spawn timeout — Could not connect to MCP server XOne Windows 11 report found three or more stdio servers unreliable while two remained stable. There is no confirmed permanent fix in the cited reports.
4 min
Confirmed workaround
Fix Playwright MCP reconnect failure and /c → C:/ rewrite on Windows
Failed to reconnect to plugin:playwright:playwrightA native Windows report found Claude serialized cmd.exe’s /c as C:/. Launching the Playwright MCP CLI directly with Node bypassed the broken command transformation.
5 min
Confirmed workaround
Claude Desktop shows “No servers added” with a valid MCP config
No servers addedThe Microsoft Store/MSIX build could silently ignore the usual AppData config path. The original reporter restored MCP loading with Anthropic’s direct-download desktop build.
5 min