Last updated: November 2026
Getting an email that starts with “Unfortunately your Duolingo English Test could not be certified for the following reason” is frustrating after all that preparation. But the reason in that email matters more than the email itself: it decides whether you can simply send in a new ID, retake the test for free, or appeal. Some uncertified results are easy to fix. A few are serious — and one kind can end your DET account permanently.
First, read the reason in your DET account and your email, and match it to the outcome table below. An ID problem usually needs only a new ID, not a retake. A technical error or a simple rule violation usually allows a free retake if you still have attempts left on your test credit. Misconduct is different: it uses up your credit, and only misconduct outcomes can be appealed — within 72 hours, once only, with a decision in about four business days.
This guide explains every outcome in plain English, what to do for each one, the retake and appeal rules for 2026, and how to stop it happening again. If your problem is the test freezing or not loading in the first place, see Duolingo English Test Stuck on Loading? Fix It Fast. If you need help from Duolingo, see Duolingo English Test Support Email and Contact 2026.
Here is what we will cover:
- What “not certified” actually means
- Your outcome and what to do next
- Common reasons, by type
- Technical problems
- Rule violations
- ID problems
- What to do now, step by step
- Retake rules
- Appeal rules
- How to prevent it next time
- FAQs
What “Not Certified” Actually Means
A result that is not certified cannot be sent to any university as a valid DET score. It is not the same as a low score — a low certified score is still a score you can send. An uncertified result means Duolingo’s AI and human proctors decided the test session could not be trusted as a fair measure of your English, or that your identity could not be confirmed, or that a technical failure stopped the test being graded.
The DET is recorded from two angles — your computer webcam and a smartphone second camera that films your screen, keyboard, and upper body — and the whole session is reviewed. That is why things that feel small, like looking away from the screen or a program running in the background, can invalidate a result.
Your Outcome and What to Do Next
Duolingo sorts uncertified results into a small set of outcomes. Find yours in your account, then follow the matching row. Do not assume you need to buy a new test until you have checked.
| Outcome | What it means | What happens next | Can you appeal? |
|---|---|---|---|
| ID Problem | Your identity could not be confirmed | Resubmit an accepted ID as directed — usually no retake needed | No — resubmit the ID instead |
| Technical Error | A crash, lost connection, or failed upload stopped the test being graded | Free retake if attempts remain on your test credit | No |
| Rule Violation | A test rule was broken, but no outside help is suspected | Free retake if attempts remain on your credit | No |
| Possible Misconduct | Strong evidence suggests outside help may have been involved | Your credit is used up; you can buy a new test | Yes — within 72 hours, once only |
| Definite Misconduct | Duolingo decided outside help did occur | Your account is blocked, temporarily or permanently | Yes — within 72 hours, once only |
Two important limits from Duolingo’s own rules: if two tests on the same credit break the rules, the credit expires even if you have attempts left, and you cannot appeal in that case. And if help from another person is suspected, the credit expires at once, even with attempts remaining.
Common Reasons, by Type
| Reason | Type | How to fix it |
|---|---|---|
| Internet dropped, test crashed, or upload failed | Technical Error | Fix the connection, then retake free if attempts remain |
| Looking away from the screen often | Rule Violation | Keep your eyes on the screen for the whole test |
| Another person visible or heard in the room | Rule Violation or Misconduct | Test alone in a locked, private room |
| Notes, a book, a phone, or a second screen nearby | Rule Violation or Misconduct | Clear your desk completely (your second-camera phone excepted) |
| Headphones or earbuds worn | Rule Violation | Use your computer speakers only |
| Background app detected (chat, Grammarly, VPN, screen sharing) | Rule Violation | Restart your computer and open nothing but the DET app |
| Microphone too quiet, or camera cannot see your face | Technical Error or Rule Violation | Test your mic and lighting in the system check first |
| Speaking too little, or answers that sound memorised | Rule Violation | Speak naturally, for the full time, in your own words |
| Invalid, expired, or mismatched ID | ID Problem | Resubmit a valid, accepted ID |
| Second camera moved, fell over, or went out of frame | Rule Violation | Fix the phone in place so screen, keyboard, and shoulders stay visible |
Technical Problems
Technical failures are the least serious outcome — they are not your fault in the cheating sense, and they usually allow a free retake. The most common ones are an unstable internet connection, a camera or microphone that stops working, and an incomplete upload at the end.
Before a retake, run the official system check, use a wired connection if you can, and do not close the app or your computer until you see confirmation that your test has uploaded. Closing the app early is a common cause of an incomplete upload. Full fixes are in Duolingo English Test Stuck on Loading? Fix It Fast.
Technical errors cannot be appealed. That sounds harsh, but it is because there is nothing to appeal: a free retake is the remedy, if you still have attempts left on your credit.
Rule Violations
Looking away from the screen
This is the most common rule violation, and the easiest to commit by accident. The test watches your eyes and head. Looking down at your keyboard, glancing at the wall, or turning to a noise in the room can all be flagged. Keep your eyes on the screen for the whole test, and set up your room so nothing pulls your attention away.
Speaking too little or sounding rehearsed
The speaking tasks are scored on natural, spontaneous English. Very short answers give the system little to grade, and memorised answers sound different from natural speech — even, regular pacing, no pauses, no self-correction. Speak for the time given, in your own words, even if you make small mistakes. Natural speech with small mistakes scores better than a perfect-sounding memorised paragraph.
Other people or unauthorised materials
No one else may be in the room, even briefly, and nothing may be on or near your desk except your computer, your ID, and your second-camera phone. That means no notes, books, papers, whiteboards, second screens, or a second phone. Clear the desk and the room before you start, and lock the door.
Background apps
The DET desktop app monitors for other software. Chat apps, Grammarly, VPNs, remote-desktop tools, screen sharing, and cloud-sync pop-ups have all been reported as causes of invalidation. Restart your laptop before the test and open nothing but the DET app. Check your system tray for programs that start by themselves.
ID Problems
Your ID must be a valid, unexpired, government-issued photo ID — in most countries a passport — and the name on it must match the name on your DET account exactly. Check the accepted-ID list for your country at englishtest.duolingo.com/ids before test day, because the accepted documents differ by country.
Common ID failures are an expired document, a school or work card that is not accepted, a name that does not match your account (including a different spelling or a missing middle name), and a photo that is blurry or does not look like you anymore. If your ID photo is years old and your appearance has changed a lot, renew the ID before the test.
The good news: an ID problem usually does not need a retake. Follow the instructions in your account to submit a new, accepted ID. If it meets the requirements, you can receive your score without taking the test again.
What to Do Now, Step by Step
- Read the reason in your account, not just the email subject. Log into englishtest.duolingo.com and open the test result — the full reason and the “Learn more” link are there.
- Match the reason to the outcome table above. That tells you whether to resubmit an ID, retake for free, buy a new test, or appeal.
- Check your remaining attempts. One test credit allows up to three starts. If you have attempts left, a technical error or a simple rule violation usually means a free retake.
- Fix the cause before you retake. A second failure on the same credit for the same reason wastes an attempt — and two rule violations on one credit expire the credit.
- Appeal only if you are eligible, and fast. See the appeal rules below — the deadline is 72 hours.
- Contact support if the reason is unclear. Use the HELP button in your account or email englishtest@duolingo.com, and quote the exact reason shown in your account.
Retake Rules
| Rule | What it means in 2026 |
|---|---|
| Attempts per credit | One purchased test credit allows up to three starts |
| Free retake | Technical Error and Rule Violation on a first attempt usually allow a free retake if attempts remain |
| Credit expiry | A test credit expires 21 days after purchase if unused; two rule violations on one credit expire it early |
| Buying more tests | You can buy up to three tests in a 30-day period; each new test costs $70, or $59 each in the $118 two-test bundle |
| Misconduct | Possible Misconduct uses up the credit (buy a new one to test again); Definite Misconduct blocks the account |
| Results timing | Certified results arrive within 48 hours (12 hours with the $40 Fast Results add-on); an uncertified result arrives instead of a score |
Before a retake, practise with the free official practice test and the mock-test plan in How to Practise Mock Tests for the Duolingo English Test. A retake that repeats the same mistake is the most expensive way to learn the rules.
Appeal Rules
Only some results can be appealed. You can appeal Possible Misconduct and Definite Misconduct, and cases where an invalid result immediately uses up your credit or your account is blocked. You cannot appeal a Technical Error, a simple Rule Violation, or an ID Problem — those have their own remedies (free retake or ID resubmission). If your account does not show an “Appeal This Result” button, your result is not eligible for appeal.
- Deadline: 72 hours. Submit the appeal within 72 hours of the notice. After that, the button disappears and you cannot appeal.
- One appeal only. You may appeal an invalid result once. A specialist team re-reviews your session, and the decision after that single appeal is final.
- Decision time: about four business days. The appeals specialist normally sends a final decision within four business days.
- What to include: use the email address you used for the test, explain clearly why you believe the decision was wrong, and include any evidence you have (for example, a photo of your test setup). Keep it factual — saying you did not cheat is not evidence; showing your setup was compliant is.
- Do not take another test while an appeal is open unless support tells you to — ask support first if you are unsure.
How to Prevent It Next Time
- Read the full test rules at englishtest.duolingo.com/prepare/rules before test day, not on test day.
- Run the official system check and the free practice test one or two days early, on the same computer and network.
- Restart your computer just before the test. Open nothing but the DET app.
- Test alone in a quiet, well-lit, private room. Lock the door and put a “do not disturb” note on it.
- Clear your desk of everything except your computer, your ID, and your second-camera phone.
- Fix the second-camera phone in place so your screen, keyboard, head, and shoulders stay in frame for the whole hour.
- Use computer speakers only — no headphones or earbuds, no exceptions.
- Keep your eyes on the screen, speak naturally for the full time, and do not close the app until your upload is confirmed.
- Check your ID expiry date and name match a week before the test, not the night before.
Frequently Asked Questions
Will I get a free retake if my test was not certified?
Often, yes — if the reason was a Technical Error or a simple Rule Violation on your first attempt and you still have starts left on your test credit. ID problems usually need only a new ID. Misconduct uses up the credit, so a retake means buying a new test.
How do I know why my test was not certified?
Log into your DET account and open the result. The reason is shown there and in the email Duolingo sends you. If the wording is vague, contact support through the HELP button and ask them to explain the exact reason.
Can I appeal if I disagree?
Only if your result is eligible — generally Possible or Definite Misconduct, a blocked account, or a credit used up at once by an invalid result. You have 72 hours, one appeal only, and the decision (normally within four business days) is final.
Does an uncertified result count as one of my three tests in 30 days?
The 30-day limit is on purchases: you can buy up to three tests in 30 days. A free retake on the same credit does not need a new purchase. If your credit is used up, buying a new test counts towards that limit.
Can I still send my score to universities?
No. An uncertified result has no score to send. You need a certified result first — by resubmitting your ID, retaking the test, or winning an appeal.
Will an uncertified result stay on my record?
Universities only see certified results you choose to send. They do not see uncertified attempts. But repeated rule violations can expire your credit and, for serious misconduct, block your account — so fix the cause before you test again.
The Bottom Line
An uncertified DET result is not the end of your application — in most cases it is a fixable problem. Read the exact reason in your account, match it to the outcome table, and act on what that outcome allows: resubmit your ID, retake for free if you have attempts left, or appeal within 72 hours if — and only if — your result is eligible. Then fix the cause properly before you test again, because a second failure on the same credit can cost you the credit itself.
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