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Kiro "Error Sending Prompt": What It Means and Fixes

Kiro says 'Error sending prompt: A network error occurred'? What it means, how to rule out credits and outages, and the fixes users report, with sources.

By Engineer Foodie Desk ✓ Sources checked Nov 1, 2026

9 min read

Error text and user reports checked Nov 1, 2026 in Kiro’s GitHub issues (#12020, #11338, #11065, #12173). Fixes and plan details checked Nov 1, 2026 in Kiro’s troubleshooting docs, firewall docs, TLS inspection docs, add-on credit docs and pricing page. Every source is listed at the bottom. No affiliate links on this page (how we work).

Short answer: it’s almost never your credits. The network version of this error means Kiro’s IDE couldn’t get a response from Kiro’s service in time. On Kiro’s GitHub, the causes people pinned down were corporate network gear (TLS inspection, endpoint security, VPNs) and mid-session timeouts. Out-of-credits looks different: Kiro shows a different message or pauses usage. Start with the network checks below, then update Kiro, then look at your credits.

The exact error: Error sending prompt: A network error occurred

Here’s the string as users paste it into Kiro’s issue tracker:

Error sending prompt: A network error occurred. Please check your connection and try again. (Conversation ID: sess_...)

Source: kirodotdev/Kiro issue #12020 (Kiro 1.1.14 on macOS, opened Oct 19, 2026) and #11338 (Kiro 1.0.437 on Windows, opened Sep 11, 2026), both verified Nov 1, 2026. Both were still open with a “pending-maintainer-response” label on Nov 1, 2026.

The same “Error sending prompt:” prefix shows up with other endings, and the ending is the part that tells you what broke:

EndingLikely areaSource
A network error occurredConnection to Kiro#12020
Improperly formed requestRequest rejected server-side#11065
You’ve reached your overage limitCredits / overage#12173

All three issues verified Nov 1, 2026.

The annoying part: “Please check your connection” shows up for people whose internet is fine. The #12020 reporter wrote, “Note that internet connectivity obviously works.”

Network, credits or outage: how to tell

Kiro’s docs index has no page for this exact string (checked Nov 1, 2026). What it does document is how to test the connection and what happens when credits run out. Together, those narrow it down fast.

1. Test Kiro’s endpoints directly. Kiro’s troubleshooting docs give two commands:

curl -v https://runtime.us-east-1.kiro.dev
curl -v https://management.us-east-1.kiro.dev

Per the docs: “A successful TLS handshake (even with an HTTP error response) confirms network connectivity. A connection timeout or TLS error indicates a firewall or proxy issue” (troubleshooting docs, verified Nov 1, 2026).

2. Check your logs for ECONNRESET. Kiro’s TLS inspection page says you’re likely hit by its firewall problem if Kiro IDE 1.1.70 works on your network but later versions don’t, and the Kiro Logs output contains read ECONNRESET (open it via View > Output > Kiro Logs). Kiro’s docs say that since version 1.1.98 the IDE uses post-quantum key exchange (X25519MLKEM768), and “Some corporate firewalls and proxies that inspect TLS traffic reset these connections” (TLS inspection docs, verified Nov 1, 2026).

3. Check your credits. Open the usage dashboard in Kiro. The pricing page says credit usage “is updated at least every 5 minutes” (Kiro pricing, verified Nov 1, 2026). If you have credits left, this probably isn’t a billing problem. When credits truly run out, the add-on credit docs say Kiro “pauses usage until you purchase more add-on credits or your plan resets”.

4. Is Kiro down? We couldn’t confirm an official Kiro status page as of Nov 1, 2026. None is linked from Kiro’s docs index. If both curl tests pass and your credits look fine, check Kiro’s community Discord and recent GitHub issues for matching reports. Those are the help channels Kiro’s troubleshooting page lists.

Fixes, in order

Everything here comes from Kiro’s docs or from users in the cited issues. Kiro hadn’t posted an official fix for the network string as of Nov 1, 2026.

1. If you’re on a corporate network, start with the firewall list. Kiro’s firewall docs list every domain the IDE needs, including runtime.*.kiro.dev, management.*.kiro.dev, prod.us-east-1.auth.desktop.kiro.dev and the legacy q.us-east-1.amazonaws.com / q.eu-central-1.amazonaws.com endpoints (“you must still allowlist them”). IDE traffic “respects your proxy settings”, but browser sign-in “bypasses any proxy settings configured in the IDE”. On #11338, one user wrote that the issue “could be solved on our setup by making adjustments to CrowdStrike Falcon” because packets were being dropped by inspection or firewall rules (comment dated Oct 7, 2026).

2. If logs show read ECONNRESET, ask your admin about the TLS setting. Kiro’s documented fix, for Kiro IDE 1.4.51 and later, is an admin-deployed managed-settings.json with "tls_key_exchange": "classical". It goes in /Library/Application Support/Kiro/ on macOS, C:\ProgramData\Kiro\ on Windows or /etc/kiro/ on Linux. Kiro’s own warning: “This removes post-quantum protection from Kiro IDE’s connections. Use it only on networks that need it” (TLS inspection docs).

3. Try off the VPN, if your company allows it. On #11338, a user running Kiro 1.4.13 described requests “being cut off at exactly five seconds”, three retries, then the error, with q.create_response.ttfb_timeout in the logs. Their finding: “Dropping the corporate VPN before submitting a turn prompt seems more reliable, but this is not a sustainable solution” (Oct 28, 2026). The same user said compacting the conversation “occasionally resolves it for one or two turns”.

4. Reload the window. On #11065, a user’s workaround was to restart the whole window through the Command Palette (Ctrl+Shift+P). It worked until they shut Kiro down. The #12020 reporter said reloading “seemed to help, but didn’t”. Worth one try, not ten.

5. Update Kiro. Run Kiro: Check for Updates from the Command Palette (troubleshooting docs). For the “Improperly formed request” variant, a user on #11065 reported “upgrading to v1.4.26 fixed it for me” (Oct 27, 2026). No one in these issues reported an update fixing the network variant.

6. Try a specific model instead of Auto. The #12020 reporter wrote, “Changing from Auto to Claude Sonnet 5.5 unblocked the situation.” The next day, after switching back to Auto, the error returned. Keep in mind that a specific model can cost more credits than Auto. Kiro’s models docs list Sonnet 5.5 at 1.3x Auto (verified Oct 27, 2026).

7. Try another account, if you have one. On #11338, the reporter’s company login worked while their personal login failed about 100 times for every 5 successes. That points at the account or session, not your Wi-Fi.

8. File it with logs. If nothing works, Kiro’s troubleshooting page asks for an issue on GitHub with your OS, Kiro version, steps tried and the error message. Export logs via Developer: Export Logs… (tick Kiro Logs and KiroLLMLogs) or Kiro: Create Debug Log Zip. Logs “may contain sensitive information”, per Kiro, so read them before sharing. Include the Conversation ID from the error. A Kiro contributor on #12020 said a report with an ID “warrants investigation against the logs for that session”.

Some of these issues have been open for over two months with a “pending-maintainer-response” label. Paying users trade VPN tricks in the comments while the error tells them to check their own connection. One reporter on #12020 asked whether they’d get a refund for the extra credits burned on retries. As of Nov 1, 2026, nobody had answered.

Out of credits? What each plan includes

If the dashboard shows zero, this table is the actual fix. Plan credits reset at the start of each billing month and “Unused credits do not roll over” (Kiro pricing, verified Nov 1, 2026).

PlanCredits/moPrice
Free50$0
Pro1,000$20
Pro+2,000$40
Pro Max5,000$100
Power10,000$200

Source: kiro.dev/pricing, verified Nov 1, 2026. Prices per user per month in USD, before tax. No annual price shown.

  • Paid plans can top up. Add-on credits are $0.04 each, packs from $5 (125 credits) to $100, up to 5 packs at a time. They’re used after plan credits, roll over, and expire 12 months after purchase (add-on credit docs, verified Nov 1, 2026).
  • Free can’t top up. “When you hit your credit limit, you must wait until the next month for your credits to reset” (same page).
  • New first-upgrade offer. As of Nov 1, 2026, Kiro’s first upgrade to Pro gives you “the rest of the month free, plus 500 trial credits to use within 12 months”. People who upgraded before November 1 “keep the $20 discount” (Kiro pricing).
  • Overage limit errors are a separate thing. One user on #12173 (Kiro 1.4.62) reported “Error sending prompt: You’ve reached your overage limit.” even after enabling overage. That’s one report with no maintainer reply as of Nov 1, 2026, not documented behaviour.

The full breakdown is in Kiro credits and Kiro pricing. If you’re on Free and keep hitting the wall, start with Is Kiro free?, and if you’re deciding how big to go, Kiro Pro vs Pro+.

Here’s what I’d do

On a work laptop: run the two curl commands, then send your IT team the firewall list and the TLS inspection page. Going by the issue threads, that’s where most of the real fixes came from.

On a home network: update Kiro, reload once, try a specific model, check credits. Still failing? File an issue with the Conversation ID and stop burning prompts on retries.

If this keeps costing you days: an error open since September is fair to weigh. See Kiro vs Cursor and AI coding tools compared.

Kiro crashing before it even opens? Kiro error code 21 covers the launch-failed startup crash and the fixes reported on Kiro’s GitHub.

If you suspect you ran out of credits, Kiro usage limits explains the caps and resets.

FAQ

What does “Error sending prompt: A network error occurred” mean in Kiro? It means the Kiro IDE didn’t get a response from Kiro’s service, and in user reports on GitHub the causes were usually corporate firewalls, TLS inspection, VPNs or mid-session timeouts, not a dead internet connection (issues #12020 and #11338, verified Nov 1, 2026).

Is Kiro down? We couldn’t confirm an official Kiro status page on Nov 1, 2026, so run Kiro’s two curl tests from its troubleshooting docs and check Kiro’s Discord and GitHub issues for others reporting the same thing.

Does Kiro stop when credits run out? Yes, Kiro pauses usage when plan and add-on credits are both used up, and Free users wait for the monthly reset because they can’t buy add-ons (Kiro add-on credit docs, verified Nov 1, 2026).

Does updating Kiro fix “Error sending prompt”? One user reported v1.4.26 fixed the “Improperly formed request” variant, but the network variant was still reported on 1.4.13, so update first and keep troubleshooting if it persists (issues #11065 and #11338, verified Nov 1, 2026).

Sources

  1. kirodotdev/Kiro issue #12020 (network error string, Kiro 1.1.14, model-switch report, contributor reply): https://github.com/kirodotdev/Kiro/issues/12020 (verified 2026-11-01)
  2. kirodotdev/Kiro issue #11338 (network error string, CrowdStrike, VPN and five-second timeout reports, contributor reply): https://github.com/kirodotdev/Kiro/issues/11338 (verified 2026-11-01)
  3. kirodotdev/Kiro issue #11065 (“Improperly formed request” variant, window restart, v1.4.26 report): https://github.com/kirodotdev/Kiro/issues/11065 (verified 2026-11-01)
  4. kirodotdev/Kiro issue #12173 (“overage limit” variant): https://github.com/kirodotdev/Kiro/issues/12173 (verified 2026-11-01)
  5. Kiro docs, Troubleshooting (connectivity tests, logs, updates, getting help): https://kiro.dev/docs/ide/troubleshooting/ (verified 2026-11-01)
  6. Kiro docs, Configuring a firewall, proxy server, or data perimeter: https://kiro.dev/docs/privacy-and-security/firewalls/ (verified 2026-11-01)
  7. Kiro docs, TLS inspection compatibility: https://kiro.dev/docs/enterprise/tls-inspection/ (verified 2026-11-01)
  8. Kiro docs, Usage beyond plan limits (add-on credits, pause behaviour): https://kiro.dev/docs/billing/add-on-credits/ (verified 2026-11-01)
  9. Kiro pricing (plans, credits, rollover, first-upgrade offer, dashboard refresh): https://kiro.dev/pricing/ (verified 2026-11-01)
  10. Kiro docs, Models (credit multipliers): https://kiro.dev/docs/models/ (verified 2026-10-27)

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