ChatGPT for WhatsApp
Troubleshooting

ChatGPT for WhatsApp Errors: Fix 401, 403, 429, 500 Fast

AOQ Team •
#errors#troubleshooting#whatsapp

This page helps you fix common ChatGPT for WhatsApp Web errors without guesswork.

If you are evaluating stability before purchase, check Pricing for plan-level controls and support options.

Quick Triage Checklist (Do This First)

  1. Refresh WhatsApp Web and retry once
  2. Confirm extension is enabled in browser
  3. Recheck AI login or API key status
  4. Verify your network/proxy is stable
  5. Retry with a shorter prompt

Error 401 (Unauthorized)

What it means

Authentication failed. Your session or API credentials are invalid.

Common causes

  • Expired login session
  • Wrong or revoked API key
  • Account permission mismatch

Fix

  • Sign out and sign in again
  • Regenerate API key and update settings
  • Confirm account/billing status

Error 403 (Forbidden)

What it means

Your request is recognized but blocked.

Common causes

  • Policy restrictions
  • Region or workspace restrictions
  • Account-level limitations

Fix

  • Retry with another source/account
  • Verify account access rights
  • Remove conflicting proxy rules

Error 429 (Too Many Requests)

What it means

Rate limit exceeded.

Common causes

  • Burst traffic from rapid commands
  • Shared API key under heavy load

Fix

  • Wait and retry with backoff
  • Reduce command frequency
  • Use a plan with higher usage headroom if needed (see plans)

Error 400 (Bad Request)

What it means

Request format or payload is invalid.

Common causes

  • Malformed prompt payload
  • Unsupported parameters
  • Prompt too long for current model context

Fix

  • Shorten prompt
  • Remove special formatting and retry
  • Reset advanced settings to default

Error 500 / 502 / 503 / 524 (Server-Side)

What it means

Upstream service instability or timeout.

Fix

  • Check provider status page
  • Retry later
  • Switch provider temporarily

“Failed to fetch” or “Network error”

What it means

Browser could not complete request.

Fix

  • Check local network quality
  • Disable conflicting VPN/proxy extensions
  • Clear browser cache and cookies
  • Reopen browser and extension

Prevention Tips

  • Keep only one active WhatsApp Web session while testing
  • Avoid sending many long prompts in a short window
  • Use concise instructions for better reliability
  • Revalidate credentials after account changes

FAQ

Which error should I prioritize first?

Always fix authentication errors (401/403) before rate-limit or payload errors.

How do I know whether issue is local or server-side?

If multiple users fail at the same time and short retries do not recover, likely server-side.

Where can I test shorter prompt variants quickly?

Use the free reply generator to draft compact prompts before sending.

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