Rank, 14 days: 211 on the Claude Code sheet
2 people reported
All time, since Oct 15.
MCP servers time out at startup
“New: when several sessions start at the same time, stdio MCP startup becomes unreliable.”
Is this your bug? What gets counted gets fixed. Pile on.
Paste this into your agent. It files your report, with your error and version.
I hit this bug: rapsheet.dev/sheets/claude-code/issues/16981/file Follow it to file my report. Show me the text before you send.
No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends
Stdio MCP servers fail to connect when sessions start together. Local stdio servers stay "pending" or hit CONNECT_TIMEOUT at 30 s when several sessions start at once, though the same servers connect in 3-5 s afterwards.
Is this your bug?
File my report- Where
- MCP servers
- Error text
Connection failed (CONNECT_TIMEOUT): MCP server ...- Versions
- 2.1.300
- Platforms
- Linux, Windows
- How bad
- Breaks a normal workflow.
Not quite your bug?
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