Duolingo English Test Invalid Result Appeal 2026

Eligible invalid Duolingo English Test (DET) results can be appealed once within 72 hours, but only if your result meets the official criteria. Most appeal decisions are sent within four business days. However, the final outcome depends on both Duolingo's current rules and the requirements of the organisation receiving your result.

Key takeaways

• Valid results and some technical or rule outcomes are not appealable.
• A purchased DET credit can allow up to three starts but only one certified result.
• Certified results remain valid for two years and cannot be shared or viewed as a certificate after expiry.
• Appeal eligibility, technical retakes and rule-violation outcomes are different processes.
• You have 72 hours from the time you receive your invalid DET result notification to submit an appeal.

In this guide: Eligibility criteria for DET invalid result appeal | What can and cannot be appealed | How to appeal an invalid DET result | Decision table | Scenario using current DET appeal rules | Action checklist for DET invalid result appeal | What happens after the appeal decision? | How we researched | Sources

Eligibility criteria for DET invalid result appeal

You can appeal an invalid DET result if it is marked as ineligible for certification and meets the official appeal conditions. Appeals are only accepted within 72 hours of receiving the invalid result notification. Each DET credit allows up to three test starts, but only one certified result. If your result is not certified due to a technical or rule-based outcome, check the specific reason before attempting an appeal.

What can and cannot be appealed

Not all DET outcomes are appealable. According to Duolingo's official appeal process:

• Can be appealed: Eligible invalid results, as defined by Duolingo's current rules.
• Cannot be appealed: Valid results, most technical issues, and rule violation outcomes. Technical retakes and rule-violation outcomes follow different processes and are not covered by the standard appeal route.

Always check your test dashboard and the official DET uncertified status guide for the latest information.

How to appeal an invalid DET result

If your DET result is eligible for appeal, follow these steps:

1. Log in to your Duolingo English Test account.
2. Check your test dashboard for the status of your result.
3. If your result is marked as invalid and eligible, submit an appeal within 72 hours using the instructions provided in your dashboard or the official DET appeal process.
4. Wait for a decision, which is usually sent within four business days.

Keep a copy of all communications and the dated source for your records.

Decision table

Scenario using current DET appeal rules

Suppose you purchased a DET credit and completed the test. Your result appears as "uncertified" on your dashboard. You check the DET uncertified status guide and confirm your case is eligible for appeal. You submit your appeal within 72 hours. Four business days later, you receive a decision. If the appeal is successful, your result may be certified. If not, you cannot appeal again for the same result, and you may need to purchase another DET credit if you wish to retake the test.

Action checklist for DET invalid result appeal

1. Confirm your DET result status on your dashboard.
2. Review the official appeal process and uncertified status guide.
3. Check if your result is eligible for appeal (not valid, not a technical or rule-violation outcome).
4. Submit your appeal within 72 hours if eligible.
5. Keep all records and wait for a decision (usually within four business days).
6. If your appeal is unsuccessful, consider your next steps based on the official guidance.

What happens after the appeal decision?

The outcome of your appeal is final for that test attempt. If your result is certified, you can share it with institutions for up to two years. If not, you cannot appeal the same result again. The receiving organisation (such as a university or employer) may have additional requirements or may not accept the result, even if Duolingo certifies it. Always check with your intended recipient before making further decisions.

Limitations and important notes

• Only one appeal is allowed per eligible invalid result.
• Appeals must be submitted within 72 hours of receiving the result.
• Certified results cannot be shared or viewed as certificates after two years.
• SpeakShark cannot issue official evidence or guarantee any appeal outcome. For official decisions, always refer to the Duolingo English Test appeal process and your receiving organisation's policies.

Related guides

• Duolingo English Test Results: How Long in 2026?
• Duolingo English Test Score Validity: Two Years

How we researched

This guide is based solely on the latest official DET appeal process and uncertified status documentation as of September 2026. Each step and limitation is supported by direct statements from Duolingo's published rules and the Council of Europe CEFR framework. No unofficial sources or assumptions were used.

Sources

1. DET appeal process, checked 2026-09-06.
2. DET uncertified status, checked 2026-09-06.
3. Council of Europe CEFR, checked 2026-09-06.

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