Ollama / Ollama

Ollama Connection Refused — ECONNREFUSED Error on localhost:11434

Fix Ollama connection refused ECONNREFUSED error when Ollama service is not running Includes evidence for Ollama troubleshooting demand.

Source-backed Last updated May 13, 2026 3 sources Needs local verification

Category: Ollama
Error signature: ECONNREFUSED — Ollama connection refused on localhost:11434
Quick fix: Confirm the local service is running on the expected host and port, then retry the smallest request.
Updated: May 13, 2026
Verification status: Source-backed
Evidence: 3 public source URLs

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for Ollama, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

ECONNREFUSED — Ollama connection refused on localhost:11434 is a Ollama failure pattern reported for developers trying to fix ollama connection refused econnrefused error when ollama service is not running. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Multiple projects reporting ECONNREFUSED errors when Ollama is offline. One project (openhuman) saw 226 Sentry events/day from this error noise. Another project added explicit OLLAMA-DOWN error categorization.

Common causes

Ollama must be running as a background daemon. When it crashes, is killed, or hasn't been started, any application trying to connect gets ECONNREFUSED. The error is confusing because there's no indication that Ollama itself needs restarting.
Multiple projects reporting ECONNREFUSED errors when Ollama is offline. One project (openhuman) saw 226 Sentry events/day from this error noise. Another project added explicit OLLAMA-DOWN error categorization.

Quick fixes

Confirm the exact error signature matches ECONNREFUSED — Ollama connection refused on localhost:11434.
Check the Ollama account, local tool state, and provider configuration involved in the failing workflow.
Confirm the local service is running on the expected host and port, then retry the smallest request.

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.

Diagnostic flow for this page

Match ECONNREFUSED — Ollama connection refused on localhost:11434 exactly before applying the quick fix.
Compare the failing environment with Ollama versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does ECONNREFUSED — Ollama connection refused on localhost:11434 mean in Ollama?

ECONNREFUSED — Ollama connection refused on localhost:11434 indicates the workflow described by "Ollama Connection Refused — ECONNREFUSED Error on localhost:11434" failed in a Ollama context. Start by confirming the exact signature and the component that emitted it.

What should I check first for ECONNREFUSED — Ollama connection refused on localhost:11434?

Check whether this cause matches your environment: Ollama must be running as a background daemon. When it crashes, is killed, or hasn't been started, any application trying to connect gets ECONNREFUSED. The error is confusing because there's no indication that Ollama itself needs restarting.

Is the ECONNREFUSED — Ollama connection refused on localhost:11434 guidance source-backed?

The "Ollama Connection Refused — ECONNREFUSED Error on localhost:11434" page is labeled source-backed. It has 3 public source URLs from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for ECONNREFUSED — Ollama connection refused on localhost:11434?

For "Ollama Connection Refused — ECONNREFUSED Error on localhost:11434", avoid applying "Confirm the local service is running on the expected host and port, then retry the smallest request." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging ECONNREFUSED — Ollama connection refused on localhost:11434?

For "Ollama Connection Refused — ECONNREFUSED Error on localhost:11434", collect the failing Ollama command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.