Aadhaar Biometric Locked or Authentication Failed: Citizen Guide 2026

If you live abroad: see the NRI India Problem Solver hub for bank, property, PAN, passport and parent-emergency guides built for NRIs.

Your fingerprint or iris is being rejected at the bank, the ration shop, the pension counter, or the new SIM kiosk. The screen flashes “Authentication Failed - 330” or “Biometric Locked” and the staff shrugs and asks you to “go fix it somewhere”. You do not need an agent and you do not need to pay anyone. The Unique Identification Authority of India (UIDAI) lets every resident lock, unlock, generate a Virtual ID, switch to OTP, update demographics and pull an authentication history from one official portal at https://uidai.gov.in or the mAadhaar app. This guide walks you through the exact 30-minute fix for every common failure code, the evidence to keep, the free grievance route, and the rare situations where you do need to dial 1930 or file a police FIR.

Two very different problems get confused at the counter:

- Biometric Locked - you (or someone with your OTP) used UIDAI's free Lock Biometrics feature. Your fingerprint and iris cannot be matched anywhere until you unlock. This is a safety feature, not a fault. Recommended for senior citizens and anyone worried about AePS fraud. - Authentication Failed - UIDAI rejected the request. The reason is in the error code shown on the operator's screen. Common codes:

• 300 / 330 - biometric mismatch (wet fingers, worn ridges, old enrolment, or locked biometrics).
• 310 - duplicate biometric (rare; raise grievance).
• 400 / 561 / 941 - invalid OTP or expired OTP.
• 403 - too many requests; wait and retry.
• 811 / 812 - best-finger detection record missing.
• K-200 / 997 - your Aadhaar is deactivated or under review.
• A-202 - demographic mismatch (name, DoB, gender, address).

Knowing the code tells you which of the seven fixes below to apply. Always ask the operator to read the exact error code before you leave the counter.

- Worn fingerprints. Farmers, masons, cooks, housekeepers and senior citizens lose ridge depth. UIDAI itself acknowledges this and offers iris and OTP as legal alternatives under the Aadhaar (Authentication) Regulations, 2016. - Locked biometrics. You locked it during an AePS scare and forgot. - Stale enrolment. Aadhaar enrolled before 2014 may have low-quality biometrics. Free re-capture at any Aadhaar Seva Kendra (₹0 for biometric update at age 5/15; ₹100 for voluntary re-capture). - Demographic mismatch. Bank shows “Pooja Kumari”, Aadhaar shows “Puja Kumari”. eKYC fails on a single character. Online correction is ₹50. - Mobile number not linked. No OTP arrives because your old SIM is dead. Update mobile at any Aadhaar Seva Kendra (₹50, in person only, biometric required). - Aadhaar deactivated. UIDAI deactivates Aadhaars flagged for biometric duplicates, dead-person records, or those that never completed quality checks. Status is visible at myaadhaar.uidai.gov.in → Check Aadhaar Status.

- Open https://myaadhaar.uidai.gov.in on a laptop or the mAadhaar app on your phone. - Log in with your 12-digit Aadhaar or 16-digit VID and OTP. - Go to Services → Aadhaar Authentication History and check the last 6 months of attempts. You will see who pinged your Aadhaar, when, from which agency, and the success or failure status. Take screenshots. - Go to Aadhaar Services → Lock/Unlock Biometrics. If the toggle says Locked, that is your answer for codes 300/330.

- Unlock Biometrics - toggle off, enter the 6-digit OTP sent to your registered mobile, confirm. Unlock is instant and stays open for 10 minutes, after which it auto-locks again if you chose that setting. - Generate Virtual ID (VID) - My Aadhaar → Generate VID. A 16-digit number arrives by SMS within 30 seconds. Use this number instead of your Aadhaar at banks, telecom, hotels and any agency that asks. VID protects your real Aadhaar number from being stored or leaked.

- Return to the counter with your VID + registered mobile. - Tell the operator: “Please switch the authentication mode to OTP.” The biometric device should have an OTP option under Authentication Mode. UIDAI Regulation 4(2)© gives you the right to choose OTP, iris or fingerprint. - If OTP also fails (no mobile linked), ask for iris. Most modern STQC-certified devices support iris scan.

- Demographic mismatch is the silent killer of eKYC. If your bank, ration card, voter ID, PAN and Aadhaar disagree on a single character, every linked service fails. - Open myaadhaar.uidai.gov.in → Update Aadhaar Online. - Fields you can update online: name, address, DoB, gender, language. Each update is ₹50, paid by UPI or net banking, and processed in 7 to 30 days. - Mobile number and email update is in person only at an Aadhaar Seva Kendra. You cannot update mobile online - that rule was tightened in 2023 to stop SIM-swap fraud.

- UIDAI helpline 1947 - toll free, 24×7, 12 languages, average wait under 4 minutes. - Email - [email protected]. Always quote your Enrolment ID (EID) or last 4 digits of Aadhaar, never the full number. - Online form - https://myaadhaar.uidai.gov.in/grievance-feedback. Attach the error-code screenshot. You receive a complaint number instantly. - Tatkal at Aadhaar Seva Kendra - for in-person escalation, every district has one. Find the nearest at https://bhuvan.nrsc.gov.in/aadhaar/.

Keep a single folder, physical or digital, with these items. UIDAI grievance closure is faster when you cite specifics.

• Screenshot of the error code at the counter (ask staff to allow it).
• Screenshot of Authentication History for the date and time of failure.
• Photo of the biometric device serial number and the agency name on screen.
• Your Enrolment ID (EID) receipt (28 digits) from any update.
• SMS log showing OTP arrival or non-arrival.
• Bank or service-counter slip stating reason for refusal.
• If iris was offered instead of fingerprint, the iris device serial number.
• Any agent quote in writing - proof for §47 misuse complaint if extortion happened.

UIDAI runs one authentic portal, one app and one helpline. Every other “Aadhaar update centre” you see on a roadside hoarding is either a private partner or an outright fraud.

- Portal: https://uidai.gov.in (the new self-service hub is https://myaadhaar.uidai.gov.in). - App: mAadhaar - Google Play and Apple App Store. Look for publisher “Unique Identification Authority of India”, not lookalikes. - Helpline: 1947 (toll free, 24×7). - Email: [email protected]. - In-person: Only Aadhaar Seva Kendras (ASKs) run by UIDAI itself, plus banks and post offices designated as Registrar centres. The official list with addresses is at https://bhuvan.nrsc.gov.in/aadhaar/.

Free, 24×7, available on the portal and the mAadhaar app. Locking your biometric stops AePS withdrawals at every banking correspondent in India. Unlock only when you actually need to authenticate (loan, gas connection, fresh KYC).

A 16-digit temporary number that maps to your Aadhaar but never reveals it. Use VID at all third-party counters. New VID can be generated any time at My Aadhaar → Generate VID.

Last 6 months of every authentication attempt. Catches AePS fraud, unauthorised eKYC, and rogue agents within hours. Pull it monthly. My Aadhaar → Authentication History.

₹50 by India Post. Looks like a debit card, lasts years, easier to carry than the A4 printout. My Aadhaar → Order Aadhaar PVC Card.

Did someone hand you a fake Aadhaar? Paste the 12-digit number at My Aadhaar → Verify Aadhaar Number. UIDAI confirms whether it exists, without revealing personal data.

Confirm whether your mobile or email is the one linked to your Aadhaar. My Aadhaar → Verify Email/Mobile. Catches old numbers still linked after you switched SIMs.

- Common cause: name mismatch (initials vs full name) or biometric locked. - Fix: unlock biometrics, generate VID, present VID at the bank. If name differs, update Aadhaar name online (₹50) then ask the bank to re-run eKYC. - Banks are bound by RBI's Master Direction on KYC, 2016 (updated 2024). They cannot freeze your existing account purely on eKYC failure without giving you a written notice and 30-day cure window. Demand the notice in writing. - For account freeze without notice, see the bank-freeze recovery guide.

- Common cause: worn fingerprints of senior citizens. - Fix: ask the bank or Common Service Centre to use iris or OTP. The Department of Pension & Pensioners' Welfare circular dated 13 December 2014 specifically allows alternate authentication. - Jeevan Pramaan (digital life certificate) accepts iris, fingerprint or face authentication. Use the Jeevan Pramaan app on a relative's smartphone; face authentication often works when fingerprints do not.

- Common cause: e-PoS biometric mismatch or family-member fingerprint not enrolled. - Fix: visit the Fair Price Shop with the Aadhaar Seva Kendra update receipt. Many states allow the Mukhya ration-card holder to authorise any family member; ensure all family Aadhaars are seeded in the ration card. Update at the state PDS portal.

- Common cause: demographic mismatch between Aadhaar and CAF (Customer Application Form). - Fix: ensure your Aadhaar name, DoB and address match exactly. Telecom can also use DigiLocker as an alternative verification - see DigiLocker verification fixes.

- Common cause: DoB mismatch between school record, PAN and Aadhaar. - Fix: update Aadhaar DoB online with a birth certificate, 10th marksheet, or passport. PAN-Aadhaar mismatch needs a parallel correction - see the PAN-Aadhaar fix guide.

UIDAI runs a tiered grievance system. Use it in this order:

- Level 1 - 1947 helpline. Note the ticket number. Most issues resolve here. - Level 2 - [email protected]. Reply within 7 working days is the published SLA. - Level 3 - File a Complaint at https://myaadhaar.uidai.gov.in/grievance-feedback. Web-form generates a complaint number visible in your dashboard. - Level 4 - Regional UIDAI Office. Eight regional offices (Bengaluru, Chandigarh, Delhi, Guwahati, Hyderabad, Lucknow, Mumbai, Ranchi). Addresses at https://uidai.gov.in/en/contact-support/have-any-question.html. - Level 5 - RTI under §6, RTI Act 2005 to the Central Public Information Officer, UIDAI. You can ask for: copy of your authentication logs, complaint disposal record, and the best-finger detection decision. See how to file an RTI online to UIDAI. - Level 6 - Public Grievance at https://pgportal.gov.in (CPGRAMS). Choose Ministry of Electronics & Information Technology → UIDAI. Statutory 21-day SLA. - Level 7 - Writ Petition. If your Aadhaar is deactivated unilaterally and grievance fails, the Supreme Court in Justice K.S. Puttaswamy (Retd.) v. Union of India (2018) 1 SCC 809 held that Aadhaar cannot be denied for benefits accessible to a citizen as a right. High Courts have repeatedly directed UIDAI to reactivate wrongly-deactivated Aadhaars; cite this in any writ.

To,
The Deputy Director General (Grievance Cell)
Unique Identification Authority of India

Subject: Authentication failure (Error Code 330) at [Bank/Counter] on
         [date] - request for resolution

Sir/Madam,

I, the undersigned, am a resident enrolled with UIDAI vide EID
[28-digit Enrolment ID] / Aadhaar last 4 digits [XXXX]. On [date]
at [time], I attempted authentication at [agency name, branch, city]
for [purpose: bank eKYC / pension / SIM / ration]. The device
displayed Error Code 330 (biometric mismatch).

I have already:
1. Confirmed via My Aadhaar that my biometrics are not locked.
2. Generated a fresh Virtual ID (last 4 digits [XXXX]).
3. Requested the operator to switch to OTP / iris mode; OTP was
   not delivered to my registered mobile [last 4 digits XXXX].

I request UIDAI to:
(a) Verify and update my biometric record under the Aadhaar
    (Enrolment and Update) Regulations, 2016.
(b) Confirm whether my Aadhaar status is active.
(c) Provide a written response within the published SLA of 7
    working days.

I am willing to visit any Aadhaar Seva Kendra in [city] for
biometric re-capture if required.

Yours faithfully,
[Name]
Address: [as on Aadhaar]
Registered mobile: [XXXX XXXX XX]
Date: [date]
Place: [city]

Most authentication failures are not crimes. They are technical or demographic mismatches and the UIDAI route is enough. Police involvement is only needed if your biometric data itself has been compromised.

You need to escalate to cyber police if and only if any of the following is true:

- AePS withdrawal happened - money left your bank account through Aadhaar-enabled payment without your knowledge. This is biometric clone fraud. See the AePS fraud recovery guide; dial 1930 within the golden hour and file at https://cybercrime.gov.in. For 1930 call script see the 1930 helpline script. - eKYC done without your consent - for instance, a new SIM, a loan, or a digital wallet was opened in your name using your Aadhaar and biometrics. This is identity theft under BNS §319 (cheating by personation) and IT Act §66C (identity theft). - Aadhaar biometric data was disclosed or leaked - for example, an operator photographed your fingerprint capture screen, or shared your authentication response. Aadhaar Act §29 (confidentiality of biometric information) read with §47 prescribes imprisonment up to 3 years. - Extortion to “unlock” your Aadhaar - agent demands money to do what UIDAI does for free. BNS §308 (extortion) + Aadhaar Act §47.

For other cases - a bank counter that simply says “not matched” - no police complaint is needed. Use the UIDAI grievance ladder.

To,
The Station House Officer
[Cyber Police Station / Local Police Station]

Subject: First Information Report - unauthorised Aadhaar
         authentication / biometric data misuse

Sir/Madam,

I, the undersigned, am the holder of Aadhaar last 4 digits [XXXX].
On [date] my UIDAI Authentication History (annexed) shows
authentication request(s) from agency [agency name + AUA code]
which I never authorised. As a result [describe: bank account
debited Rs X via AePS / new SIM activated / loan opened / etc.].

I submit that the offence(s) prima facie attract:
 - Aadhaar (Targeted Delivery of Financial and Other Subsidies,
    Benefits and Services) Act, 2016 - sec. 29 (confidentiality
    of biometric information) read with sec. 47.
 - Information Technology Act, 2000 - sec. 66C (identity theft)
    and sec. 66D (cheating by impersonation using computer
    resource).
 - Bharatiya Nyaya Sanhita, 2023 - sec. 318 (cheating),
    sec. 319 (cheating by personation), sec. 308 (extortion,
    if agent demanded money).

I request registration of an FIR under Bharatiya Nagarik Suraksha
Sanhita, 2023 sec. 173 and a copy of the FIR under sec. 173(2).

Documents enclosed:
  1. Aadhaar Authentication History (PDF).
  2. Bank statement / SIM activation message.
  3. Screenshots of error codes / agent demand.
  4. National Cyber Crime Reporting Portal acknowledgement
     (Complaint No: [number]).

Yours faithfully,
[Name]
Address: [residential address]
Mobile: [number]
Date: [date]
Place: [city]

- Paying an agent ₹500 to ₹5,000 to “unlock” when UIDAI does it free in 30 seconds. Refuse and report. - Sharing your full Aadhaar number when VID would do. Banks, hotels, telecoms and OTAs are bound by UIDAI circular dated 10 January 2018 to accept VID. - Not pulling Authentication History monthly. AePS fraud is invisible until you check. - Ignoring a name mismatch of one character. Every linked service fails until corrected. - Submitting Aadhaar to an unknown WhatsApp number to “speed up reactivation”. This is the most common biometric-fraud bait in 2025-26. - Letting an operator photograph your face during eKYC beyond the device camera. The device captures what it needs; phones do not.

• Aadhaar Act 2016 §7 - authentication is mandated for subsidies and benefits funded out of the Consolidated Fund of India, but alternate identity is to be offered if authentication fails. Read this verse to any counter that refuses you outright.
• Aadhaar Act 2016 §8(3) - requesting entity must inform the resident of the nature of information to be shared and obtain consent.
• Aadhaar Act 2016 §29 - confidentiality of biometric information; core biometric cannot be shared, even with consent.
• Aadhaar Act 2016 §47 - penalties for unauthorised access or disclosure: up to 3 years imprisonment + ₹10,000 fine for individuals; up to ₹1 lakh for companies.
• Aadhaar (Enrolment and Update) Regulations, 2016 - biometric capture standards, update procedure and fees.
• Aadhaar (Authentication) Regulations, 2016 - Reg. 4 lists permitted authentication modes (OTP, fingerprint, iris, face, multi-factor); Reg. 13 requires AUAs to maintain logs.
• IT Act 2000 §43A, §66C, §66D - applies if a body corporate is negligent with your data or if someone impersonates you using your Aadhaar.
• Bharatiya Nyaya Sanhita 2023 §308 (extortion), §318 (cheating), §319 (cheating by personation) - applies to agent-extortion and identity-theft cases on or after 1 July 2024.
• Bharatiya Nagarik Suraksha Sanhita 2023 §173 - FIR registration on or after 1 July 2024 replaces CrPC §154.
• RTI Act 2005 §6 and §7 - UIDAI is a public authority; any resident can file an RTI for their authentication logs, complaint disposal record and update history. UIDAI is bound to reply in 30 days.

Yes. UIDAI's biometric lock and unlock are completely free, available 24×7 on the official portal and the mAadhaar app. Any agent who charges for this service is defrauding you. Report to 1947 and, if extortion was involved, to the police under BNS §308.

Aadhaar is your permanent 12-digit number. Virtual ID (VID) is a temporary 16-digit number that maps to your Aadhaar but never reveals it. VID can be regenerated any time and used at every counter that asks for Aadhaar. Always prefer VID for third-party agencies - banks, telecoms, hotels and online services are bound by UIDAI circular dated 10 January 2018 to accept it.

Worn ridges are common in seniors, farmers, masons, cooks and people who do manual labour. UIDAI allows iris, OTP and face authentication as alternates under the Aadhaar (Authentication) Regulations, 2016. Ask the counter to switch the device mode. If you also need a fresh biometric record, visit any Aadhaar Seva Kendra and ask for biometric update with iris (₹100). Jeevan Pramaan also supports face authentication via app.

Three possibilities: your registered mobile number is old or dead, your SMS inbox is full, or the telecom OTP route is throttled. Step 1: verify mobile linkage at myaadhaar.uidai.gov.in → Verify Email/Mobile. Step 2: update mobile in person at any Aadhaar Seva Kendra (₹50). Mobile update cannot be done online since 2023 - this is a security measure against SIM-swap fraud, not a bug.

Check the status at myaadhaar.uidai.gov.in. Call 1947 with the EID. File a written grievance citing Justice K.S. Puttaswamy v. Union of India (2018) 1 SCC 809 - Aadhaar cannot be denied where the citizen has a legal right to the underlying service. If UIDAI does not respond in 30 days, file an RTI under §6 of the RTI Act 2005 asking for the reason for deactivation. If still unresolved, a writ petition under Article 226 in the High Court has worked in scores of reported cases.

Not outright. RBI Master Direction on KYC, 2016 (updated 2024) requires the bank to give you a written notice and a cure window before freezing an existing account. For new accounts, RBI permits deemed officially valid documents like passport, voter ID, driving licence, PAN, NREGA card. Insist on Officially Valid Document (OVD) route if eKYC fails. For freeze without notice, see the bank-freeze guide.

Yes, this is the most common eKYC failure for tax filing, mutual funds and demat accounts. Fix Aadhaar name online for ₹50 at myaadhaar.uidai.gov.in, or fix PAN at the NSDL or Protean e-Gov portal. Read the detailed walkthrough in the PAN-Aadhaar mismatch fix guide.

No. 1930 is for cyber-financial fraud only - money actually left your account or someone impersonated you. A locked biometric is not a fraud; it is a safety feature you (or UIDAI's auto-lock) enabled. Unlock it at the portal. Dial 1930 only if AePS has already drained your account; that is a separate emergency - see AePS fraud recovery.

Yes. UIDAI is a public authority under §2(h) of the RTI Act 2005. You can ask for: copies of authentication logs, copy of biometric update record, deactivation order if any, grievance disposal record and best-finger detection result. UIDAI fee is ₹10. Reply within 30 days is mandatory. File online at rtionline.gov.in (search UIDAI) or by post. Step-by-step in file RTI online to UIDAI.

Three places, in this order: (1) Call 1947 and lodge a UIDAI grievance citing Aadhaar Act §47. (2) File at https://cybercrime.gov.in under Other Cyber Crime → Aadhaar fraud. (3) Walk into the nearest police station with the agent's name, location, photo or call recording and ask for an FIR under BNS §308 (extortion) + §318 (cheating) + Aadhaar Act §47. The agent's “service” is a crime; your refusal is the right answer.

This article uses ==== Q ==== H3 headings for FAQ entries. RTI Wiki's sitewide schema-auto.js detects these headings and generates a valid FAQPage JSON-LD block at runtime. Do not embed inline `<HTML>` JSON-LD blocks - DokuWiki renders them as visible text on this site. The auto-script publishes one Article + one FAQPage + one BreadcrumbList entry per page.

• UIDAI portal: https://uidai.gov.in
• Self-service hub: https://myaadhaar.uidai.gov.in
• Biometric lock/unlock: My Aadhaar → Aadhaar Services → Lock/Unlock Biometrics
• Generate Virtual ID: My Aadhaar → Generate VID
• Authentication History: My Aadhaar → Aadhaar Authentication History
• Update Aadhaar online: https://myaadhaar.uidai.gov.in/genricUpdateOnlineAadhaar
• mAadhaar app: Google Play Store and Apple App Store (publisher: Unique Identification Authority of India)
• Find an Aadhaar Seva Kendra: https://bhuvan.nrsc.gov.in/aadhaar/
• UIDAI grievance form: https://myaadhaar.uidai.gov.in/grievance-feedback
• UIDAI helpline: 1947 (toll free, 24×7, 12 languages)
• UIDAI email: [email protected]
• CPGRAMS: https://pgportal.gov.in
• National Cyber Crime Reporting Portal: https://cybercrime.gov.in
• Cyber-financial fraud helpline: 1930
• Aadhaar Act 2016: https://uidai.gov.in/images/Aadhaar_Act_2016_as_amended.pdf
• Aadhaar (Authentication) Regulations 2016: https://uidai.gov.in/images/regulation_3_aadhaar_authentication_regulations_2016.pdf
• Aadhaar (Enrolment and Update) Regulations 2016: https://uidai.gov.in/images/regulation_2_aadhaar_enrolment_and_update_regulations_2016.pdf
• RTI Act 2005: https://rti.gov.in
• RTI online portal: https://rtionline.gov.in
• Justice K.S. Puttaswamy (Retd.) v. Union of India (2018) 1 SCC 809 - Aadhaar cannot be denied for benefits a citizen has a right to.

• AePS / Aadhaar biometric fraud recovery
• Bank account frozen on cyber-fraud flag - how to unfreeze
• 1930 helpline script for cyber fraud
• Aadhaar correction stuck - file an RTI
• How to file an RTI online to UIDAI
• DigiLocker verification failed - fix it
• PAN-Aadhaar name mismatch - eKYC fix
• UMANG app - 1,700+ citizen services in one place
• The citizen RTI playbook

1200×630 PNG, flat-vector editorial illustration. Centre: an outline of an Indian identity card with a fingerprint and an iris icon, a small padlock overlay marked “LOCKED” in soft red. Left: a citizen in plain clothes calmly holding a smartphone showing the mAadhaar app screen with a green “Unlocked” toggle. Right: a counter staff with a biometric device displaying “Authentication Failed - 330” in muted amber. Background: a soft saffron-to-green gradient with subtle Ashoka chakra watermark. Bottom strip in deep navy: “Aadhaar Authentication Failed - Citizen Guide 2026 - righttoinformation.wiki”. Style: clean, government-portal aesthetic, no real faces, no real names, no logos other than a tiny “UIDAI route only” badge.