Proxy troubleshooting

Fix axios proxy error

Ranked causes, ordered diagnostics, and a verified remedy for axios proxy error - ending with a final connection check.

Quick answer

Fix: axios not using the proxy correctly. Confirm endpoint values, test with curl through the endpoint, apply the matched remedy, then re-verify the exit IP is your assigned endpoint.

Exact symptom text
Causes ranked by likelihood
Ordered diagnostics
Final connection check

When this is the right fit

  • Exact symptom text
  • Causes ranked by likelihood
  • Ordered diagnostics

Who this page is for

Ranked causes, ordered diagnostics, and a verified remedy for axios proxy error - ending with a final connection check.

Fix: axios not using the proxy correctly. Confirm endpoint values, test with curl through the endpoint, apply the matched remedy, then re-verify the exit IP is your assigned endpoint.

Diagnosis tree

Requests bypass the proxy

Likely causes

  • - proxy config only applies in Node runtime
  • - httpsAgent missing for HTTPS

Verified remedy

Set both http/https agents or use the proxy field with auth; verify with an IP echo call.

407 or ECONNREFUSED

Likely causes

  • - auth object missing
  • - Wrong port

Verified remedy

Add auth: { username, password } and re-copy host and port from the dashboard.

Final connection check

  1. 1Apply the remedy for the matched symptom
  2. 2Test the endpoint directly with curl -x or --socks5-hostname
  3. 3Repeat the original action in the tool
  4. 4Confirm the exit IP is the assigned endpoint

Working connection

The original action completes and the exit IP matches the endpoint.

Broken connection

If curl through the endpoint also fails, the problem is endpoint-level: check dashboard status or swap to a spare endpoint.

Sources

Facts last reviewed 2026-09-01.

Prevent it recurring

axios in Node needs the proxy field or explicit agents; in browsers a proxy config cannot apply.

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Frequently asked questions

How do I fix axios proxy error?

Work the diagnosis tree top to bottom: confirm endpoint values, test with curl through the endpoint, apply the remedy, then run the final connection check.

Why does this keep coming back?

Recurring proxy failures usually trace to an unstable mapping - rotating endpoints or shared addresses. A dedicated static endpoint per profile makes behavior predictable.

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