Claude Code / AI Coding Tools
Claude Code Stream Stall 15-30 Seconds at Session Start When Using AskUserQuestion Tool
Fix Claude Code VS Code extension stream freezing for 15-30 seconds at session start with AskUserQuestion tool Includes evidence for Claude Code troubleshooting demand.
- Category
- AI Coding Tools
- Error signature
Stream stall ~15-30s at start of new session with AskUserQuestion tool- Quick fix
- Compare the failing environment with a known working setup, then change one configuration value at a time.
- Updated
What this error means
Stream stall ~15-30s at start of new session with AskUserQuestion tool is a Claude Code failure pattern reported for developers trying to fix claude code vs code extension stream freezing for 15-30 seconds at session start with askuserquestion tool. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.
Why this happens
Open issue with ‘has repro’ label. Specific to VS Code extension with claude-opus-4-7[1m] model. Stream freezes for 15-30s when AskUserQuestion tool is invoked at session start. Clear reproduction steps.
Common causes
- The stream freezes at the start of a new session when the model invokes AskUserQuestion tool, causing a 15-30 second delay before any response appears. This affects user experience in the VS Code extension with claude-opus-4-7 model.
- Open issue with ‘has repro’ label. Specific to VS Code extension with claude-opus-4-7[1m] model. Stream freezes for 15-30s when AskUserQuestion tool is invoked at session start. Clear reproduction steps.
Quick fixes
- Confirm the exact error signature matches
Stream stall ~15-30s at start of new session with AskUserQuestion tool. - Check the Claude Code account, local tool state, and provider configuration involved in the failing workflow.
- Compare the failing environment with a known working setup, then change one configuration value at a time.
Platform/tool-specific checks
- Verify the command, editor, extension, or API client that produced the error.
- Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
- Avoid deleting credentials, local model data, or project settings until the failing scope is clear.
Step-by-step troubleshooting
- Capture the exact error message and the command, editor action, or request that triggered it.
- Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
- Review the source evidence below and compare it with your environment.
- Apply one change at a time and rerun the smallest failing action.
- Keep the working fix documented for the team or deployment environment.
How to prevent it
- Keep provider/tool configuration documented.
- Record non-secret diagnostics such as tool version, provider name, model name, and command path.
- Add a lightweight check before CI or production workflows depend on the tool.
Sources checked
Evidence note: Open issue with ‘has repro’ label. Specific to VS Code extension with claude-opus-4-7[1m] model. Stream freezes for 15-30s when AskUserQuestion tool is invoked at session start. Clear reproduction steps.
Related errors
- Claude Code SSE streaming hangs indefinitely
- Claude Code Unhandled case [object Object]
FAQ
What should I check first?
Start with the exact Stream stall ~15-30s at start of new session with AskUserQuestion tool text and the smallest action that reproduces it.
Can I ignore this error?
No. Treat it as a failed Claude Code workflow until the root cause is understood.
Is this guaranteed to have one fix?
No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.
How do I know the fix worked?
Rerun the same command, editor action, or request. The fix is working when that action completes without Stream stall ~15-30s at start of new session with AskUserQuestion tool.